Endure Sunlight (3.5e Feat)
From D&D Wiki
Endure Sunlight [General]
You have learned to endure the day that so pains others of your kind.
Prerequisite: Vulnerability to sunlight
Benefit: All numeric penalties to ability scores, attack rolls, skill checks and simular are reduced by 1+ the character's charisma modifier. Any other penalties are delayed by 1+ the character's charisma modifier rounds. Even if the character has a charisma penalty, this cannot reduce numeric penalties and delay other penalties by less than 1. Numeric penalties cannot be reduced below 0.