From Pathfinder Lost Omens Ancestry Guide, which isn't enabled.

Invoke Celestial Privilege

REACTION

Activity reaction

Trigger You attempt a saving throw against a divine effect, but you haven't rolled yet.

You rise above the triggering effect, refusing to be harmed by it. You gain a +1 circumstance bonus to the triggering saving throw and to any other saving throws you attempt against divine effects until the start of your next turn.

Pathfinder Lost Omens Ancestry GuideOGL