Divine Intervention

Divine Intervention - Enchantment Spell

For 10 seconds, if target ally recieves damage that would be fatal, the damage is negated and that ally is healed for 26-197 points.

10 1/4 30

Does this work for the next ten seconds, or does it work if you suffer fatal damage in the next ten seconds and then ends???
i.e. only one 'fatal damage' protected against or the next ten seconds worth of fatal damages?
Thanks in advance

It is gone if the target dies. So it only works once. Other than for use in conjunction with Vengeance, I don't find it terribly useful.

thanks