From Pathfinder Lost Omens Impossible Lands, which isn't enabled.

Fortified Mind

FEAT 9

Your mind is unusually resilient and resistant to influence. When you would gain the Fascinated or stupefied condition, you can attempt a DC 17 flat check. On a success, you don't gain the fascinated or stupefied condition.

Pathfinder Lost Omens Impossible LandsOGL