رَبَّنَا لَا تَجۡعَلۡنَا فِتۡنَةٗ لِّلۡقَوۡمِ ٱلظَّـٰلِمِينَ. وَنَجِّنَا بِرَحۡمَتِكَ مِنَ ٱلۡقَوۡمِ ٱلۡكَٰفِرِينَ.

Our Lord, make us not [objects of] trial for the wrongdoing people. And save us by Your mercy from the disbelieving people.

Rabbana la tajalna fitnatallilqawmizzalimin. Wa najjina birahmatika minalqawmilkafirin.

One of the ways by which Allah misleads those who reject His signs and deny His right to be worshipped alone is to grant them victory over unrighteous Believers. With these victories, the disbelievers are misled into believing that the truth is with them and that the Believers follow falsehood, for why would their God allow them to be defeated? The Believers then ask Allah to save them from the unbelieving people by His grace and mercy. -Tafseer As-Sa’di and others.