*If* you had a saint present, it might work. Just some guys in a field with a holy relic are not going to be enough. Saving someone from death is serious magic, and it takes a practitioner.
Merlin or a Saint could do something here, depending on the cost, but those sorts of resources are not available to you.
For future reference, there are also magical healing vials and other magical cures from the fae realm. Again, not resources you have available, but they may come up in the future.