Il nostro Dio is an Italian equivalent of the English phrase "Our God." The masculine singular phrase models a difference between the two languages whereby Italian employs definite articles -- il, in this case -- where English does not use "the." The pronunciation will be "eel NO-stro DEE-o" in Italian.
"God" in English is Dio in Italian.
"To leave it to God" in English is lasciarlo a Dio in Italian.
"God's gift" in English is regalo di Dio in Italian.
"In God we trust!" in English is Abbiamo fede in Dio! in Italian.
"Thank you, God!" in English means Grazie, Dio! in Italian.
"God of darkness" in English means re delle tenebre in Italian.
"For the glory of God" in English is Per la gloria di Dioin Italian.
"Only God will judge me!" in English is Solo Dio mi giudicherà! in Italian.
"Holy Mother of God" in English is Santa Madre di Dio in Italian.
Lodare Dio in Italian means "Praise God" in English.
Bella! Dio! in Italian is "Beautiful! (Oh my) God!" in English.
Grazie a Dio! in Italian means "Thank God!" in English.