According to Sam, God's name in latin. Speaking it to a possessed person make her flinch.
In truth, God in Latin is not 'Christo', but 'Deus'. 'Christo' would be 'Christ', which technically must work the same. Christ is actually the abbreviation of the Latin word, which means 'the anointed one'.
Neige 22:19, 12 September 2006 (PDT)