﴿ إِن يَنصُرْكُمُ ٱللَّهُ فَلَا غَالِبَ لَكُمْ ۖ وَإِن يَخْذُلْكُمْ فَمَن ذَا ٱلَّذِى يَنصُرُكُم مِّنۢ بَعْدِهِۦ ۗ وَعَلَى ٱللَّهِ فَلْيَتَوَكَّلِ ٱلْمُؤْمِنُونَ ﴾

“If God succours you, none can ever overcome you; but if He should forsake you, who could succour you thereafter? In God, then, let the believers place their trust!”

Please check ayah 3:164 for complete tafsir.