Armor of Earth

Feats

At 10th level, you can touch an ally and harden its armor or clothing. For 1 minute, the ally gains DR 1/—. For every 2 levels beyond 10th, this DR increases by 1 (to a maximum of DR 5/— at 18th level). This doesn't stack with any other damage resistance or reduction.

Armor of Earth — Feats | Pathfinder: WotR Database