Yes, keep the dog away from the area and put the babies back. She will come for them, Momma rabbits only nurse their kits once or twice a day so don't panic if you don't see her right away or if they still there in several hours.
I would try and put them back right where the nest was, it was probably lined in some nice warm fur from Momma rabbit.
IF Momma doesn't come back for them then you need to give them to a wildlife rehabber. Rabbit kits are notoriously hard to feed and keep alive. They just don't take to the process as well as some other species.
Good Luck!