Ali 'Imran 3:160

In yansurkumu Allahu falaghaliba lakum wa-in yakhthulkum faman thaallathee yansurukum min baAAdihi waAAala Allahifalyatawakkali almu/minoon

If Allāh 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 Allāh let the believers rely.

If Allah helps you, there is none to overcome you. And if He abandons you, then, who is there to help you after that? In Allah the believers should place their trust.