Do not weaken and do not grieve; you are the superior ones, if you are of the believers.
Sayyed Abbas Sadr-Ameli
Do not faint and do not grieve for you shall gain the upper hand, if you be believers
Al-muntakhab fi tafsir al-Qur'an al-Karim
Do not falter in your war of belief against positive unbelief nor grieve at heart, for you shall gain the upper hand if your hearts are impressed with the image of religious and spiritual virtues