It really depends on the rabbit and the dog. My rabbits are fine with my dogs, but my dogs don't bother them. When I have dogs over to do grooming, some are more interested in the rabbits and that can set the rabbits off a bit.
You could try getting a towel or something with the dogs scent on it so your rabbit can get used to the smell being around.
If your rabbit will be in a separate room where the dogs will not be, it should not be too much of an issue. If the dogs bark a lot, then that could bother the rabbit.
Your rabbit will be stressed anyway as it is a new and strange environment. Make sure you have some towels or blankets that are used so he has some familiar smells. The same foods, toys and cage will also help to make him feel safer.