Ingenting från beskrivningen av Uncanny Dodge föreslår att det skulle minska skadorna.
At 2nd level, a barbarian gains the ability to react to danger before her senses would normally allow her to do so. She cannot be caught flat-footed, nor does she lose her Dex bonus to AC if the attacker is invisible. She still loses her Dexterity bonus to armor class if immobilized. A barbarian with this ability can still lose her Dexterity bonus to armor class if an opponent successfully uses the feint action against her.
If a barbarian already has uncanny dodge from a different class, she automatically gains improved uncanny dodge (see below) instead.
Din DM kan vara förvirrad med Improved Evasion , som gör reducerar skador från explosioner och liknande med 50%:
Benefit: This works like evasion, except that while the rogue still takes no damage on a successful Reflex saving throw against attacks, she henceforth takes only half damage on a failed save. A helpless rogue does not gain the benefit of improved evasion.