It describes a discussing between the Pharaoh and a diety, with the pharaoh asking philosophical questions like " how could you punish me if my actions were your will? I came across it in a wiki article like 8 years ago and haven't been able to find it since.
You may be talking about the so-called Kadesh Poem, that - as a text - was both preserved in several inscriptions as well as on papyrus. It's about Ramesses II. "victory" at the battle of Kadesh and features quite prominently a prayer (not really a discussion though) in the midst of battle, in which he adresses the god Amun directly and asks him just those questions.
I can't think of any other example right now where a Pharaoh accuses a god in that way.