Atk/Res FInish explanation

Does anyone know what Atk/Res Finish means by “triggered before or during this combat” how does it apply +5dmg and +7hp then? Like if a brave weapon quads and your second hit procs the special does that mean no hp and dmg on the first hit but you get them on hits 2-4 or just 3 and 4 or what?

I hear it works from the moment your special is ready or it procs (if it didn’t proc before the fight). So if it’s at 1 and the enemy attacks you, the the proc should apply the skill and so should the rest of times you hit them during that combat.

So, in your example, it should work for hits 2, 3 and 4. But again, if what I’ve heard is right.