I think this is Latin, for "Immaculate Savior Goddess." This is the sacred title, of Inspector Gadget's niece, known as Sophie/Penny Ruth. The Ruth shall set you free! The word, "Dea Immaculate Christe," is a joke on DiC, which made the original Inspector Gadget.
Following the collapse of the Sabantinian Empire, there's now two groups, claiming to be its rightful successors, the Waltdisneyans, in the US, and the Wildbrainians, in Canada. Both say Dea Immaculate Christe, to praise Sophie/Penny Ruth , of Inspector Gadget. Wildbrain made Inspector Gadget 2.0, and Disney is making "Inspector Gadget 3: Revenge of Dr. Claw." Unfortunately, I don't think there is a way, to make Disney, and Wildbrain, friends, so they can make a live-action Inspector Gadget TV Series! Save us, Goddess Sophia Penelope Ruth!