Surah Al-Anfal — Ayah 40 (8:40)
وَإِن تَوَلَّوۡاْ فَٱعۡلَمُوٓاْ أَنَّ ٱللَّهَ مَوۡلَىٰكُمۡۚ نِعۡمَ ٱلۡمَوۡلَىٰ وَنِعۡمَ ٱلنَّصِيرُ ٤٠
English translation (Saheeh International)
But if they turn away - then know that Allāh is your protector. Excellent is the protector, and excellent is the helper.
Brief commentary
If they turn away from the order to leave disbelief and preventing others from Allah’s religion, then be certain, O believers, that Allah will help you against them. What an excellent protector He is for the one He protects, and what an excellent helper He is for the one He helps! Whoever He protects will be successful and whoever He helps will be victorious.