Man attacked by an evil spirit

Yesterday I heard about a man who was attacked by an evil spirit, 5 believers went to cast out that evil spirit. They fasted for a day before going there. Since they have never done that before, the evil spirit did not go out of the man, but instead scared the 5 people who went to cast away the evil spirit. Please pray that the believers will not lose faith and the evil spirit in that man be eventually cast away !!!