This is a Georgian version of a Trisagion, a standard hymn of the Divine Liturgy in most of the Eastern and Oriental Orthodox Churches and Eastern Catholic Churches.
I learnt it for the big Sing for Water concert in London in August 2009.
წმინდაო ღმერთო,
წმინდაო ძლიერო,
წმინდაო უკვდავო,
შეგვიწყალენ ჩვენ.
Ts'midao Ghmerto
Ts'mindao Dzliero
Ts'mindao Uk'vdavo
shegvits'qalen chven.
Holy God
Holy Mighty
Holy Immortal,
have mercy on us
Sing for Water Choir, London 2009
http://www.youtube.com/watch?v=k2Off1YoZHo
http://www.youtube.com/watch?v=rdDtFUG_LW0
http://www.youtube.com/watch?v=D2APqiD8Pqo
Information about Trisagion prayers
http://en.wikipedia.org/wiki/Trisagion
Information about the Georgian alphabet and language
Language learning materials for Georgian