An archaeology student discovers three Angels in a tomb, who were violently made into humans by God. She reluctantly aids them in a search for a scared book to restore them to their natural form, so that they can exact their revenge and stop the “End of Times.”

It's an interesting concept, but you need to refine it. What is the heart of the story? A woman helping angels restore their divinity so they can save the world? Or is it a revenge tale? Whose story is being told, the angels or the woman?

I like your logline but something is still missing. The question now becomes 'why' should she 'reluctantly' aid the angels to stop the apocalypse. Does she hate mankind and/or is she suicidal?

So now you have:

'After a suicidal archaeology student discovers three fallen Angels in a tomb, she reluctantly guides them to a scared book that wil make them archangels (again), so they can bring their wrath upon God and stop the apocalypse."

I like the phrase "the end of time" but the" apocalypse" is shorter.

Is the 'revenge' against God? And the 'End of Times' is initiated by God? In that case, how these angels may help? Seems unbelievable! Replacing the word 'God' by 'Demon' makes more sense.