There are two ways we go about this. One is directing our warfare prayer to God Himself.  Jesus prayed this to the father when He said “I do not pray that you should take [my disciples] out of the world, but that you should keep them from the evil one” (John 17:15). The other way to pray against evil spirits is to issue a command to the evil spirit under the authority of the name of Jesus. Because this involves addressing a being in the invisible world, it has been referred to from time to time as a prayer of COMMAND. Paul used this type during his ministry for deliverance in Philippi. While he was there, a spirit of divination, also known as python, was harassing him by using a slave girl. Paul when the timing was right he addressed the spirit directly, “I command you in the name of Jesus Christ to come out of her” (Acts 16:18). This command worked, and the spirit immediately left the girl.