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.
Exorcism in Islam
Prohibited techniques often utilize "shirk", which is found in practices that prepare amulets or talismans. This is prohibited because "shirk" is the sin of practicing idolatry or polytheism i.e. the deification or worship of anyone or anything besides the singular God. Many times Qur'anic verses are added throughout the recitation when using these objects in order to 'mask' their "shirk". However, God believes he has provided sufficient cures in executing an exorcism, therefore exorcists should not have to rely on methods involving "shirk". Additionally, individuals seeking exorcism should avoid magicians or soothsayers because these magical practices go against Islamic Law.