Not only was Guy Fawkes being reckless in his attempt to blow up the Houses of Parliament but had his explosives gone off he would have frightened the entire rabbit population of Westminster half to death.
To avoid giving your rabbit a sleepless night on the fifth of November, you should take them indoors as far away from all the commotion as possible. Do this earlier in the day, not five minutes before, and it will give your rabbits a chance to acclimatise to their new surroundings. And if you want to be really considerate why not take the emphasis away from loud bangs to apple bobbing and sparklers?!