Kickback
From HGWiki
Kickback, also abbreviated KB, is damage applied to an attacker when a target is hit. For instance, a character with the Elemental Shield buff will cause fire KB, while Death Armor causes magic KB, and Mestil's Acid Sheath causes acid KB. Some mobs can cause party-wide KB, where the entire party takes damage. Sometimes KB can be caused by only certain kinds of attacks (e.g., melee damage).
See also
- The Hells Damage article includes information on Hells enemies that do kickback.