Manichaeism
"Satan is powerful. He is more powerful than we are. That is why we desperately need the armor of God. But as powerful as he is, he is far less powerful than God. That is why the Bible declares that greater is He who is in you (the Holy Spirit) than he who is in the world (Satan). Satan’s darts are quenchable; God’s are not. You can flee the presence of Satan; you cannot flee the presence of God." - R.C. SProul