Aqua Benedicta - Blessed Water, holy water
Signum Crucis - Sign of the cross, Cross Sign
Angelus - Angel
Imposito Manus - laying on hands, imagine a priest who lays his hands on top of a person's head
Suffragium - Voice
Aspersio - Sprinkling, like, holy water
Benedictio Sanctissimi Sacramenti - "Blessing of the holiest sacrament"
Magnificat - from magnificare, means to praise, to glorify
Gloria - well, obviously glory
Lex Divina - Divine Law
Lex Aeterna - Eternal Law
Magnus Exorcismus - "Big exorcism" or w/e
Redemptio - Well... redemption, or salvation.
Kyrie Eleyson - is actually Greek, and means "Oh Lord, have mercy!", it's a prayer in Christian liturgy, something like intercessions, only for yourself, and not for others.
Pneuma - is also Greek, and means air, or "ghost" or rather "spirit" or "animus" etc.
Assumptio - obviously comes from lat. assumere (to assume), thus assumption, although that doesn't make any sense, considering the effect of the skill. @_@
Basicila - a basicila was a big market hall in Roman towns
Meditatio - self explaining. Meditation, prayer.