Exoproofing (耐モード, Tai Mōdo?, lit. Proof Mode) are a recurring set of defensive enemy abilities in the Final Fantasy series. Only appearing in the Final Fantasy XIII subseries, the abilities allow an enemy to change its elemental resistances. Due to the changing elements present in each entry, some Exoproofing abilities were dropped after the original Final Fantasy XIII.
The Aster Protoflorian and Vernal Harvester can change their elemental resistance with the Exoproofing abilities for Fire, Lightning, Ice and Water. They absorb one element, but are weak to the opposing element. They take half damage from all other elements.
The Pink Lily can change its elemental resistance with Exoproofing: Ice and Exoproofing: Lightning.
Three the elemental Exoproofing abilities appear as abilities for Aster Protoflorian and Aster Protoflorian Ω. Each Exoproofing ability bestows a another buff alongside the En-element status and overwrites the enhancements already placed on the user. Exoproofing: Ice bestows Enfrost and Faith on the user, Exoproofing: Wind bestows Enaero and Regen on the user. The user absorbs one element, is weak against the opposing one, and takes half damage from two others.