incantation

n. words chanted in a magic spell or ritual; magic spell, magic ritual

An incantation is the words spoken during a ritual, either a hymn or prayer invoking or praising a deity, or in magic, occultism, witchcraft with the intention of casting a spell or an object or a person. The term derives from  Latin incantare (tr.), meaning "to chant (a magical spell) upon," from in- "into, upon" and cantare "to sing".
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Noun
1. a ritual recitation of words or sounds believed to have a magical effect
(synonym) conjuration
(hypernym) spell, magic spell, charm
(hyponym) invocation

n. incantation, spell

(n.)
The act or process of using formulas sung or spoken, with occult ceremonies, for the purpose of raising spirits, producing enchantment, or affecting other magical results; enchantment.
  

(n.)
A formula of words used as above.