How to damage as a player

[wither?]

on right click:
    if player's tool is iron sword named "&6Hyperion":
        loop 8 times:
            if block 1 in front of player is air, void air, cave air , water, kelp, grass or tall grass:
                teleport player 1 block in front of player
            else:
                stop loop
        teleport player 1 block above player
        create a fake explosion 1 meter above the player
        create a fake explosion 1 meter in front of the player
        damage all entities in radius 10 of player by 50
        set {hyperion.%player%} to 1
        wait 0.1 seconds
        set {hyperion.%player%} to 0

so i have this code and i have other code that checks if the damage taken is by a player so is there a way to make it like

damage all entities in radius 10 of player by 50 as player

or a addon that i need to get?