Damage Reduction( Complete Warrior, p. 151)
You can shrug off some damage from attacks.
You gain damage reduction 3/-. This benefit doesn't stack with damage reduction granted by magic items or nonpermanent magical effects, but it does stack with damage reduction granted by permanent magical effects, class features, or this feat itself.
A character can gain this feat multiple times. Each time you gain the feat, your damage reduction in creases by 3.