Null zone all

local toggle = true -- on/off
local damageValue = 9999999999 -- Adjust Knockback value as needed
local player = game:GetService("Players").LocalPlayer

local function hitOthers()
    if not toggle then return end 

    for _, otherPlayer in pairs(game:GetService("Players"):GetPlayers()) do
        if otherPlayer ~= player and otherPlayer.Character then
            game:GetService("ReplicatedStorage").remotes.hit:FireServer(otherPlayer.Character, damageValue)
        end
    end
end

while wait(0.1) do 
    hitOthers()
end