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From Pathfinder Impossible Magic, which isn't enabled.

Null Field

FEAT 10
ARCHETYPECONCENTRATE
Activity 1 action
Archetype Living Nexus
Prerequisites Living Nexus Dedication
Requirements You are overflowing and have taken energy damage within the last minute.

You understand the frequency of energies that have damaged you and can extend the magical network of power in your internal nexus to diffuse incoming attacks. Choose one type of energy damage you have taken within the last minute. You gain resistance to that energy type equal to half your level for 1 minute.

Pathfinder Impossible MagicORC