﴿ وَضَلَّ عَنْهُم مَّا كَانُوا۟ يَدْعُونَ مِن قَبْلُ ۖ وَظَنُّوا۟ مَا لَهُم مِّن مَّحِيصٍۢ ﴾

“And so, all that they were wont to invoke aforetime will have forsaken them; and they shall know for certain that there is no escape for them.”

And what they used to call on what they used to worship before in this world of idols has forsaken them and they suppose they will be certain that there is no refuge for them no escape from the chastisement the negation in both instances comments on the operation implied in the nouns of actions; also the negation stands in place of the direct objects in both instances.