Defaith (ability)

Defaith is a recurring magic spell in Lightning Saga. It deals minor magic damage with a chance to inflict Defaith, reducing target's Magic.

Final Fantasy XIII
Defaith is a negative Status Effect in Final Fantasy XIII that significantly lowers the target's Magic damage. Target with Defaith has their Magic power decreased by 88%, and also affects the party's magical Full ATB Skills, Hope's Last Resort and Vanille's Death. Defaith cannot be inflicted by the player party. It can be cured with Esuna or Dispelga and can be canceled with the Faith status.

Final Fantasy XIII-2
Defaith reappears in Final Fantasy XIII-2, but nothing has changed since Final Fantasy XIII.