Dies Irae

Dies Irae may refer to:
 * Enemy ability from Final Fantasy X-2.
 * Enemy ability from Final Fantasy XIII.
 * Part of lyrics of Ragnarok's theme from Final Fantasy XIII.

Etymology
"Dies Irae" is Latin for "Day of Wrath". The ability refers to events from games they are featured, and it could be referring to destruction of Spira; and of Cocoon which would summon Maker and allow to create a new world.