Indeed, they will never avail you against Allah at all. And indeed, the wrongdoers are allies of one another; but Allah is the protector of the righteous.
English Transliteration
Innahum lan yughnoo AAanka mina Allahi shayan wainna alththalimeena baAAduhum awliyao baAAdin waAllahu waliyyu almuttaqeena
Tafsir of Verse 19
Surely they will not avail thee aught against God. Surely the evildoers are friends one of the other; God is the friend of the godfearing.
They will be of no use to thee in the sight of Allah: it is only Wrong-doers (that stand as) protectors, one to another: but Allah is the Protector of the Righteous.