I noticed something near the end of the fight, in his visions he always sees a bloody hand representing holding a knife (blade extending like a finger pointing). That’s the path of the holy war started in his name. But he doesn’t want it
However, in order to survive he has to “become the Quizat Haderach” and risk that eventuality. After seeing the vision again, Paul flips his blade the opposite way. He’s committed to his inherited destiny but not willing to be the bloody hand of genocide
A+ sneaky symbolism. Villeneuve does this in many of his movies. Instead of dialogue he uses flashbacks and quick edits to overlay ideas like a sentence. There’s an amazing moment like this at the end of Arrival but I don’t want to spoil anything.