From Pathfinder Lost Omens Absalom, City of Lost Omens, which isn't enabled.

Cynical

FEAT 1

You've been approached with suspicion and distrust throughout your life and return these sentiments back to the strangers you encounter. As a result, you are difficult to deceive. You gain a +1 circumstance bonus to your Perception DC against Lies and Impersonations.

Pathfinder Lost Omens Absalom, City of Lost OmensOGL