The difference is always there. There is a difference. Those who serve the living God always experience a difference from those who don't. The Lord watches over His own but the devil torments his own. The Lord gives life to His own but the devil steals, kills and destroys his own. The Lord prepares a home in heaven but the devil will draw his own to hell. So, where you belong determines what you will experience.
The Lord and His family are living in this world and are free from every attack. There are no evil for those who obey the commandments of God. The Lord Jesus promised us that no evil shall come near our dwelling. That is just what it is. There is no evil in this world which will be able to harm the elect. Our Savior told us that nothing shall by any means touch us. So, those of us who are on the Lord’s side are safed from every evil.
The evil spirits can touch those who are not on the side of God. All those who are disobedient and sinful shall experience the torments of evil spirits. If you want to be free from satanic attacks, begin to obey God's commandments.