May Allaah not make us a trial for those who have disbelieved!
رَبَّنَا لَا تَجْعَلْنَا فِتْنَةً لِّلَّذِينَ كَفَرُوا وَاغْفِرْ لَنَا رَبَّنَا ۖ إِنَّكَ أَنتَ الْعَزِيزُ الْحَكِيمُ
“Our Lord! Make us not a trial for those who have disbelieved, and forgive us, Our Lord! Verily, You, only You are the All-Mighty, the All-Wise.” [60:5]
Mujaahid (rahimahullaah) said: The meaning of it is: Neither punish us at their hands nor through a punishment from yourself, so they say: ‘’Had these (Muslims) been upon the truth they would not have been afflicted with this (punishment).
Az-Zujaaj (rahimahullaah) said: The meaning of it is: Do not give them victory over us, so they think that they are upon truth and we are put to trial by way of that.
[Source: Ighaatha Al-Lahfaan 2/163]