Piotr is gonna get bounced around in R1 but the best outcome is that Sasuke runs out of chakra before Piotr is harmed.
With all of his abilities, the genjutsu takes over. That said, all the X-Men have had extensive mental training, so I don't think it'll be a stomp. Not for this version of Sasuke at least. Pre-EMS Sasuke isn't stomping, and we don't know what Amateratsu would do to someone made of organic metal. Still give it to Sasuke, but with Piotr bloodlusted, Sasuke may have to work about as hard as he did against Danzo.