Exorcism
In Catholic Christianity, exorcisms are performed in the name of Jesus Christ. A distinction is made between a formal exorcism, which can only be conducted by a priest during a baptism or with the permission of a bishop, and "prayers of deliverance" which can be said by anyone.
The Catholic rite for a formal exorcism, called a "Major Exorcism", is given in Section 11 of the Rituale Romanum. The Ritual lists guidelines for conducting an exorcism, and for determining when a formal exorcism is required. Priests are instructed to carefully determine that the nature of the affliction is not actually a psychological or physical illness before proceeding.
Buda (folklore)
It includes singing praise and victory songs, reading from the Scripture, prayer and confronting the spirit in the name of Jesus. Dialogue with the spirit is another important part of the exorcism ceremony. It helps the counselor (exorcist) to know how the spirit was operating in the life of the demoniac. The signs and events mentioned by the spirit are affirmed by the victim after deliverance.