How would i make this part hurt others when they touch it but not hurt me?

Basically what the title says i can't figure out how to do this. How would i make the part hurt others but not hurt me when i touch it, i tried this script but it doesn't work.

wait(5)
player = game.Players.LocalPlayer
mouse = player:GetMouse()
safe = game.Workspace.Player -- i used safe as the vairable to distingush between who gets hurt and who doesn't

print("GO")

detectionPad 				= Instance.new("Part",player.Character)
detectionPad.Anchored		= true
detectionPad.CanCollide     = false
detectionPad.BrickColor 	= BrickColor.new("Really blue")
detectionPad.Transparency 	= .4
detectionPad.FormFactor     = Enum.FormFactor.Custom
detectionPad.Size 			= Vector3.new(10, 0.5, 10)
detectionPad.CFrame 		= detectionPad.CFrame*CFrame.Angles(1,0,0)
mesh 						= Instance.new("CylinderMesh",detectionPad)



while true do
	wait()
	detectionPad.CFrame 	= player.Character.Torso.CFrame
	detectionPad.CFrame 	= detectionPad.CFrame *CFrame.new(0,-3.1,0)
	if(player.Character.Torso.Position - detectionPad.Position).magnitude <= 5 then
		if not safe then
			print("Death") --not going adding the killing part yet
		end
	end
	
end

I'm not sure if you can do that with just one script, but if you are willing to have two scripts then do this.

permission = {"Player"}

function checkOkToLetIn(name) 
	for i = 1,#permission do 
		if (string.upper(name) == string.upper(permission[i])) then return true end 
	end 
	return false 
end 

local Door = script.Parent

function onTouched(hit) 
	local human = hit.Parent:findFirstChild("Humanoid") 
	if (human ~= nil ) then 
		if (checkOkToLetIn(human.Parent.Name)) then 
			wait(4)
		else human.Health= 0
		end 
	end 
end 

script.Parent.Touched:connect(onTouched)

Put this script as a child of your script and disable this script, modify your script to copy this script then past it into the brick and enable it (enabling is a behavior property). Here is an example of how to clone something:

local part = Instance.new("Part")
part.Parent = game.Workspace
local clone = part:Clone()
clone.Parent = game.Workspace