Since this is in a religious thread, I suspect you mean "Satan."
If that's the case, then I have no fear of Satan. I fear only God, for He has the power over all there is. I also fear that I might misunderstand what He wants of me. By my incorrect action, I could condemn myself. Satan is merely a trickster -- one of my brothers -- even similar to Christ, because they are both children of God, as are we.