No, absolutely, definitely not. As Lord of the Flies has said, a rabbit of any age can cause serious physical harm to a guinea pig, especially what is going to be a frail, elderly one, through kicking, jumping and bonking.
Rabbits often carry a pathogen in their gut which is harmless to them, but lethal to the guinea pig. Also, guinea pigs require a higher volume of fresh fruit and vegetables in order to absorb vitamin C. If you feed the animals together, it is likely the rabbit will end up with digestive problems from too much fresh food - possibly bloat, which can be lethal.
Please, please don't do it. They are different species and they aren't meant to be kept together, full stop. Pet shops used to (and sometimes still do) try and sell two pets for one by saying they can live together but they can't. I've seen the result of keeping guineas and rabbits together and it's not nice. I know there are folks who say "oh, I kept them together with no problems," but they may have been lucky, or just didn't witness the damage being done.
If you can't keep both separate, get the guinea pig rehomed. The alternative could be a very painful injury and eventual death for the guinea pig. Just don't.