(2:238) Maintain with care the [obligatory] prayers and [in particular] the middle prayer and stand before Allah, devoutly obedient.
Muhammad Taqi-ud-Din al-Hilali and Muhammad Muhsin Khan,
(2:238) Guard strictly (five obligatory) As-Salawat (the prayers) especially the middle Salat (i.e. the best prayer – ‘Asr). And stand before Allah with obedience [and do not speak to others during the Salat (prayers)].
Mohammed Marmaduke William Pickthall
(2:238) Be guardians of your prayers, and of the midmost prayer, and stand up with devotion to Allah.
Abdullah Yusuf Ali
(2:238) Guard strictly your (habit of) prayers, especially the Middle Prayer; and stand before Allah in a devout (frame of mind).
Mohammad Habib Shakir
(2:238) Attend constantly to prayers and to the middle prayer and stand up truly obedient to Allah.
(2:238) Preserve (constantly) (i.e; observe strictly) the prayers, and the middle prayer, and rise up devoutly to Allah.
(2:238) Be ever mindful and protective of the prescribed Prayers, and the middle Prayer, and stand in the presence of God in utmost devotion and obedience.
Amatul Rahman Omar
(2:238) Be watchful over the Prayers especially the middle (and most excellent) Prayer (which comes in the midst of rush of work and business), and do stand up before Allâh truly obedient (and in all humility).
(2:238) Observe/guard on the prayers, and the prayers the middle, and stand/call to God obeying/worshipping humbly .
(2:238) Be wakeful of your service of prayer, and the midmost service; and honour God by standing before Him in devotion.
A. J. Arberry
(2:238) Be you watchful over the prayers, and the middle prayer; and do you stand obedient to God.
Abdul Majid Daryabadi
(2:238) Guard the prayers, and the middle prayer, and stand up to Allah truly devout.
Maulana Mohammad Ali
(2:238) Pay due attention to your prayers, especially the middle prayer and stand up while praying, in obedience to God.
Hamid Abdul Aziz
(2:238) Observe prayers, especially the middle (afternoon) prayer, and stand you before Allah with full attention and devotion.
(2:238) Guard all your prayers, and the middle prayer
(2:238) Guard your prayers, and the middle prayer, and stand before God in devotion.
Ahmed Raza Khan
(2:238) Guard all your prayers, and the middle prayer; and stand with reverence before Allah.
(2:238) Be ever mindful of prayers, especially the middle prayer; and stand up before God in submissive devotion.
(2:238) Guard strictly (five obligatory) As-Salawat (the prayers) especially the Middle Salah. And stand before Allah with obedience.
Ali Quli Qarai
(2:238) Be watchful of your prayers, and [especially] the middle prayer, and stand in obedience to Allah;
Hasan al-Fatih Qaribullah and Ahmad Darwish
(2:238) And preserve the prayers and the middle prayer, and stand obedient to Allah.
That is translated surah Al Baqarah ayat 238 (QS 2: 238) in arabic and english text, may be useful.