I am trying to make the fireball not damage the player that shot it?

So once you fire the attack and it hits the player that shot the attack, it breaks the damage script and doesn't work anymore, but if the fire attack doesn't hit the player that shot it, the script works perfectly, how do i fix it?

Script -

local Blast = script.Parent
local Explosion1 = Blast.Explosion1
local Explosion2 = Blast.Explosion2
local Explosion3 = Blast.Explosion3
local Explosion4 = Blast.Explosion4
local Bits = Blast.Bits
local Fire1 = Blast.Fire1
local Fire2 = Blast.Fire2
local Fire3 = Blast.Fire3
local Damage = script.Parent.Damage.Value
local BoolCheck = Blast:FindFirstChild("BoolCheck")
local Check = true
local BodyVelocity = Blast:FindFirstChild("BodyVelocity")
Blast.Touched:Connect(function(hit)
	if Check == true then
		Check = false
		local Humanoid = hit.Parent:FindFirstChild("Humanoid")
		if Humanoid then print("Hit")
			if BoolCheck.Value ~= hit.Parent.Name then
			if BoolCheck.Value == hit.Parent.Name then
			BodyVelocity.Velocity = Vector3.new(0,0,0)
			Blast.Anchored = true
			print("Hit Part is not the shooter")
			Explosion1.Enabled = true
			Explosion2.Enabled = true
			Explosion3.Enabled = true
			Explosion4.Enabled = true
			Bits.Enabled = false
			Fire1.Enabled = false
			Fire2.Enabled = false
			Fire3.Enabled = false
			Humanoid.Health = Humanoid.Health - Damage	
			wait(0.25)
			Explosion1.Enabled = false
			Explosion2.Enabled = false
			Explosion3.Enabled = false
			Explosion4.Enabled = false
			wait(1.5)
			Blast:Destroy()
			end
			end
			end
	end
	end)