When a Rogue activates their Uncanny Dodge against extra damage effects, does the feature halve all of the damage or only the weapon's damage?
To exemplify, if struck by a Planetar's great sword, the Rogue takes 4d6+7 slashing damage plus 4d8 radiant because of Angelic Weapons. Does Uncanny Dodge half all of that damage or only the great sword portion?