Exorcism
In Catholic practice the person performing the exorcism, known as an exorcist, is an ordained priest. The exorcist recites prayers according to the rubrics of the rite, and may make use of religious materials such as icons and sacramentals. The exorcist invokes God—specifically the Name of Jesus—as well as members of the Church Triumphant and the Archangel Michael to intervene with the exorcism. According to Catholic understanding, several weekly exorcisms over many years are sometimes required to expel a deeply entrenched demon.
Witchcraft
It is a common belief that jinn can possess a human, thus requiring exorcism ("ruqya") derived from the Prophet's "sunnah" to cast off the jinn or devils from the body of the possessed. The practice of seeking help from the jinn is prohibited and can lead to possession. The "ruqya" contains verses of the Qur'an as well as prayers specifically targeted against demons. The knowledge of which verses of the Qur'an to use in what way is what is considered "magic knowledge."