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From Pathfinder #148: Fires of the Haunted City, which isn't enabled.

Crystal Keeper Dedication

FEAT 4
Archetype Crystal Keeper
Prerequisites trained in Elven Lore or Society

You can use Arcana, Occultism, Religion, or Society to Decipher Writing by meditating before a crystal, regardless of the type of writing. When you Decipher Writing and roll a critical failure, you get a failure instead, and when you Decipher Writing and roll a success, you get a critical success instead.

Additionally, you gain resistance 10 to damage from hazards associated with crystals.

Crystal Keeper

Pathfinder #148: Fires of the Haunted CityOGL