Deo gratia
(Lat) Thanks be to God.
The Royal Navy have a different toast for each day of the week
The original versions were...
Sunday: Absent friends and those at sea.
Monday: Our native land or King and country.
Tuesday: Our mothers or Health and wealth.
Wednesday: Ourselves or Our swords or Old ships.
Thursday: The King; honest men and bonnie lassies.
Friday: Fox hunting and old port or Ships at sea.
Saturday: Sweethearts and wives.
The current versions are...
Sunday: Absent friends.
Monday: Our ships at sea.
Tuesday: Our men.
Wednesday: Ourselves (the remark "since no one else is likely to think of us" usually follows the toast).
Thursday: A bloody war or a sickly season.
Friday: A willing foe and sea room.
Saturday: Sweethearts and wives ("may they never meet" is the popular rejoinder).
Which finally leads us to the 'Navy Grace'.
The selected Officer stands at the head of the table, bows his head and says...
"Thank God"
...and dining may commence