Our Lord! Bring us out of this. If ever we return (to evil), then indeed we shall be wrongdoers.meaning, send us back to the world, and if we go back to what we used to do before, then we will indeed be wrongdoers who deserve punishment.This is like the Ayat:فَاعْتَرَفْنَا بِذُنُوبِنَا فَهَلْ إِلَى خُرُوجٍ مِّن سَبِيلٍNow we confess our sins, then is there any way to get out, Until His statement:فَالْحُكْمُ للَّهِ الْعَلِـىِّ الْكَبِيرِ (So the judgment is only with Allah, the Most High, the Most Great!). (40:11-12) meaning, there will be no way out, because you used to associate partners in worship with Allah whereas the believers worshipped Him Alone.