Check damage recived without resistance

[static swallow]

I wanna give player resistance and when it runs out all the resisted damage will be dealt to the player or applied as unclensable withering

[rain tusk]

Not feasible for a datapack. Sorry

Mostly because you want to know the exact amounts and sum them.

There is an extremely clunky way to do this but it won't be fool proof.

[static swallow]

ah if its not feasible I'm just gona count every hit as half a heart and it would still work

I'm guessing the uncurable withering would be easiest with scoreboard

[rain tusk]

An advancement with entiry_hurt_player can detect any amount of damage, but you can't easily tell how much damage was dealt or reduced with ease.

It detects all damage, even fall damage (despite the name)

If you need amounts of damage taken, a scoreboard tracking statistics might be more useful but I don't recall if we have stats tracking both

[static swallow]

wait doesnt resistance just reduce damage taken by 20% per level

[rain tusk]

It does and I just check the wiki for be sure, there are statistics for these values

So you can use scoreboards to track damage taken and resisted

Just make the objectives track the right statistics

https://minecraft.wiki/w/Statistics