I have a huge hunch this is not gonna work at all, but I may know how to survive the third explosion, and it has to do with the title.
The Rebirth Flame.
I highly, highly doubt the success of it, but if the hint matches this (it's a feather from a phoenix, maching fire and sky{), this item might not only give you reraise, but allow you to stay in the battle. Just noting that this will probably not work all all, however, but anyone with spare time to climb Parradamo Torr could try this out. XD