The Resurrect spell

[Failia]

I recently acquired the Resurrect spell (or ability), how does it actually work, or does it need to work with the topaz carbunkle active?

I don't have a white mage or summoner but, from my understanding, it's just a spell you cast on a downed player that revives them. Keep in mind that if you do not have swift cast available, it does have a long cast time so only use it when you don't expect to be interrupted anytime soon or need to do something else (like heal others).