(22:78) And strive for Allah with the striving due to Him. He has chosen you and has not placed upon you in the religion any difficulty. [It is] the religion of your father, Abraham. Allah named you “Muslims” before [in former scriptures] and in this [revelation] that the Messenger may be a witness over you and you may be witnesses over the people. So establish prayer and give zakah and hold fast to Allah. He is your protector; and excellent is the protector, and excellent is the helper.
Muhammad Taqi-ud-Din al-Hilali and Muhammad Muhsin Khan,
(22:78) And strive hard in Allah’s Cause as you ought to strive (with sincerity and with all your efforts that His Name should be superior). He has chosen you (to convey His Message of Islamic Monotheism to mankind by inviting them to His religion, Islam), and has not laid upon you in religion any hardship, it is the religion of your father Ibrahim (Abraham) (Islamic Monotheism). It is He (Allah) Who has named you Muslims both before and in this (the Quran), that the Messenger (Muhammad SAW) may be a witness over you and you be witnesses over mankind! So perform As-Salat (Iqamat-as-Salat), give Zakat and hold fast to Allah [i.e. have confidence in Allah, and depend upon Him in all your affairs] He is your Maula (Patron, Lord, etc.), what an Excellent Maula (Patron, Lord, etc.) and what an Excellent Helper!
Mohammed Marmaduke William Pickthall
(22:78) And strive for Allah with the endeavour which is His right. He hath chosen you and hath not laid upon you in religion any hardship; the faith of your father Abraham (is yours). He hath named you Muslims of old time and in this (Scripture), that the messenger may be a witness against you, and that ye may be witnesses against mankind. So establish worship, pay the poor-due, and hold fast to Allah. He is your Protecting friend. A blessed Patron and a blessed Helper!
Abdullah Yusuf Ali
(22:78) And strive in His cause as ye ought to strive, (with sincerity and under discipline). He has chosen you, and has imposed no difficulties on you in religion; it is the cult of your father Abraham. It is He Who has named you Muslims, both before and in this (Revelation); that the Messenger may be a witness for you, and ye be witnesses for mankind! So establish regular Prayer, give regular Charity, and hold fast to Allah! He is your Protector – the Best to protect and the Best to help!
Mohammad Habib Shakir
(22:78) And strive hard in (the way of) Allah, (such) a striving as is due to Him; He has chosen you and has not laid upon you an hardship in religion; the faith of your father Ibrahim; He named you Muslims before and in this, that the Apostle may be a bearer of witness to you, and you may be bearers of witness to the people; therefore keep up prayer and pay the poor-rate and hold fast by Allah; He is your Guardian; how excellent the Guardian and how excellent the Helper!
Dr. Ghali
(22:78) And strive for Allah as is the true striving for Him. He is (The One) Who has selected you, and in no way has (He) made for you (any) restriction in the religion, (being) the creed of your fatherIbrahim (Abraham). He is (The One) Who has named you Muslims earlier and in this (Book) that the Messenger may be a constant witness against you, and that you may be constant witnesses against mankind. So keep up the prayer, and bring the Zakat (i.e; pay the poor-dues) and adhere firmly to Allah; He is your Patronizer; so how favorable is The Patronizer, and how favorable is The Ready Vindicator!
Ali Unal
(22:78) Strive in Gods cause and purely for His sake (against His enemies to raise His Word, and against Satan and your carnal, evil-commanding souls,) in a manner worthy of that striving. He has chosen you (especially for this task) and has not laid any hardship on you in the Religion. This is the way of your father Abraham. God named you Muslims previously, and in this Book, that the (most noble) Messenger may be a witness for you (as to the ways you follow), and that you may be the witnesses for people. So establish the Prayer in conformity with its conditions, pay the Prescribed Purifying Alms, and hold fast to God. He is your Owner and Guardian. How excellent a Guardian and an Owner He is, how excellent a Helper.
Amatul Rahman Omar
(22:78) And strive your hardest to win the pleasure of Allâh, so hard a striving as is possible and as it behoves you. He has chosen you and has imposed no hardship upon you in the matter of your faith, (so follow) the creed of your father Abraham. He named you Muslims (both) before this and (again) in this (Book the Qur´ân), so that the Messenger may be a guardian over you and that you may be guardians over people. Therefore, observe Prayer, keep on presenting the Zakât and hold fast to Allâh. He is your Patron, what a gracious Patron, and what a gracious Helper.
Literal
(22:78) And struggle/do (your) utmost His deserved/true struggle , He chose/purified you, and He did not make/put on you in the religion from strain/hardship , your father Abraham`s religion/faith, He named/identified you the Moslems/submitters/surrenderers from before, and in this the Messenger to be a witness/present on you, and you be witnessing/testifying/witnesses/testifiers on the people, so stand/keep up the prayers, and give/bring the charity/ purification , and hold fast/take shelter with/by God, He is your master/ally , so blessed/praised (is) the master/ally , and blessed/praised (is) the victorior/savior . 236
Ahmed Ali
(22:78) Strive in the way of God with a service worthy of Him. He has chosen you and laid no hardship on you in the way of faith, the faith of your forbear Abraham. He named you Muslim earlier, and in this (Qur’an), in order that the Prophet be witness over you, and you be witness over mankind. So be firm in devotion, pay the zakat, and hold on firmly to God. He is your friend: How excellent a friend is He, how excellent a helper!
A. J. Arberry
(22:78) and struggle for God as is His due, for He has chosen you, and has laid on you no impediment in your religion, being the creed of your father Abraham; He named you Muslims aforetime and in this, that the Messenger might be a witness against you, and that you might be witnesses against mankind. So perform the prayer, and pay the alms, and hold you fast to God; He is your Protector — an excellent Protector, an excellent Helper.
Abdul Majid Daryabadi
(22:78) And strive hard for Allah as is due unto Him hard striving. He hath distinguished you, and hath not placed upon you any narrowness in the religion the faith of your father, Ibrahim. He hath named you Muslim aforetime and in this, that the apostle may be a witness for you, and that ye may be witnesses against mankind. Wherefore establish the prayer and’give the poor-rate, and hold fast by Allah; He is your Patron: an Excellent Patron and Excellent helper!
Maulana Mohammad Ali
(22:78)-
Muhammad Sarwar
(22:78) Strive steadfastly for the Cause of God. He has chosen you but has not imposed on you hardship in your religion, the noble religion of your father, Abraham. God named you Muslims before and in this Book, so that the Messenger will witness (your actions) and will be the witness over mankind. Be steadfast in your prayer, pay the religious tax, and seek protection from God; He is your Guardian, a gracious Guardian and Helper.
Hamid Abdul Aziz
(22:78) O you who believe! Bow down and prostrate yourselves (in obeisance), and serve your Lord, and do good, that per chance (or possibly) you may prosper;
Faridul Haque
(22:78) And fight in Allah´s cause as is the true manner of fighting
Talal Itani
(22:78) And strive for God, with the striving due to Him. He has chosen you, and has not burdened you in religionthe faith of your father Abraham. It is he who named you Muslims before, and in this. So that the Messenger may be a witness over you, and you may be witnesses over the people. So pray regularly, and give regular charity, and cleave to God. He is your Protector. What an excellent Protector, and what an excellent Helper.
Ahmed Raza Khan
(22:78) And fight in Allah’s cause as is the true manner of fighting; He has preferred you and has not kept any hardship upon you in religion; the religion of your father Ibrahim; Allah has named you Muslims in the previous Books and in this Quran, so that the Noble Messenger be your guardian and witness, and you be witness against other people; therefore keep the prayer established and give charity, and hold fast to the rope of Allah; He is your Master; so what an excellent Master and what an excellent Supporter!
Wahiduddin Khan
(22:78) Strive for the cause of God as it behoves you to strive for it. He has chosen you and laid on you no burden in the matter of your religion, the faith of Abraham your forefather. In this, as in former scriptures He has given you the name of Muslims, so that the Messenger may be a witness over you, and so that you may be witnesses over mankind. Therefore, say your prayers regularly and pay the zakat and hold fast to God. He is your master. An excellent master and an excellent helper!
Safi-ur-Rahman al-Mubarakpuri
(22:78) And strive hard in Allah’s cause as you ought to strive. He has chosen you, and has not laid upon you in religion any hardship: it is the religion of your father Ibrahim. He has named you Muslims both before and in this (Qur’an), that the Messenger may be a witness over you and you be witnesses over mankind! So, perform the Salah, give the Zakah and hold fast to Allah. He is your Mawla, what an Excellent Mawla and what an Excellent Helper!
Ali Quli Qarai
(22:78) And wage jihad for the sake of Allah, a jihad which is worthy of Him. He has chosen you and has not placed for you any obstacle in the religion, the faith of your father, Abraham. He named you Muslims before, and in this, so that the Apostle may be a witness to you, and that you may be witnesses to mankind. So maintain the prayer, give the zakat, and hold fast to Allah. He is your masteran excellent master and an excellent helper.
Hasan al-Fatih Qaribullah and Ahmad Darwish
(22:78) Struggle for Allah as is due to Him. He has chosen you and has not laden a burden upon you in your religion, being the Creed of Abraham your father. He has named you Muslims before and in this so that the Messenger (Muhammad) can be a witness for you, and in order that you be witnesses against mankind. Therefore, establish the prayer and pay the obligatory charity and hold fast to Allah. He is your Guardian, the Excellent Guardian, the Excellent Helper!
That is translated surah Al Hajj ayat 78 (QS 22: 78) in arabic and english text, may be useful.