Can you test in Minecraft via command whether an entity is hit?

Hi, can you test in Minecraft via command whether an entity is hit? Or whether she gets less Hrezen? Please answer me ;-)

You could stoaren the Hp of an entity in first in scoreboard1 then in scoreboard2 and then look whether scoreboard1

This is then possible with a clock with repeaters

To the first cmd execute store to the second execute store and then execute if and there you can connect an output with a comparator

I don't know the explicit cmds, I find execute store too complicated