Ali 'Imran 3:160

إِن يَنصُرۡكُمُ ٱللَّهُ فَلَا غَالِبَ لَكُمۡۖ وَإِن يَخۡذُلۡكُمۡ فَمَن ذَا ٱلَّذِي يَنصُرُكُم مِّنۢ بَعۡدِهِۦۗ وَعَلَى ٱللَّهِ فَلۡيَتَوَكَّلِ ٱلۡمُؤۡمِنُونَ 160

If Allah should aid you, no one can overcome you; but if He should forsake you, who is there that can aid you after Him? And upon Allah let the believers rely