pf2e.fyi
From Pathfinder Lost Omens Shining Kingdoms, which isn't enabled.

Guarded Mind

FEAT 6
ARCHETYPEFORTUNE
Activity free action
Archetype Ulfen Guard
Prerequisites Ulfen Guard Dedication
Frequency once per 10 minutes
Trigger You fail a saving throw against an effect that has the mental trait.

When your enemies try to turn your mind against you, thoughts of your anathema bolster you. You can reroll the triggering saving throw with a +2 circumstance bonus, but you must use the new result, even if it's worse.

Pathfinder Lost Omens Shining KingdomsORC