I would be more worried about a tetanus jab for yourself than a rabies jab for the dog, especially in the UK, as we rarely have our dogs jabbed for it unless they are getting a pet passport to travel abroad.
Trouble with dogs is if they are intent on getting hold of another dog, they don't think about you being in the way.
Dog bites are very painful, I find the worse are on your fingers, I have ended up sitting up in bed holding my hand aloft to relieve the pain on the odd occasion that I have not moved quick enough to avoid the fangs!