In a four player dungeon during a boss, after we had just taken a lot of damage, i used my bard (healing) limit break and the other party members were acting like i shouldn't have.

So my question is, who is typically supposed to use the limit break and when? I assumed mine would have been useful considering the circumstances, but I suppose they were intending to use their damage-dealing limit break near the very end of the fight or something?

Thanks