From Pathfinder Treasure Vault (Remastered), which isn't enabled.

Quenching (Greater)

ITEM 10

Price 1000 gp

Usage etched onto armor

Bulk —

This rune counters burning and corrosive agents. Armor with this rune reduces the DC of the flat check to end persistent acid or fire damage affecting you from 15 to 10 (5 with particularly effective assistance).

Pathfinder Treasure Vault (Remastered)ORC