It’s entirely possible, but you will just have to be very cautious about introducing them, and they may never be able to fully interact.
My boyfriend’s cat was picked up off the streets as a kitten and became a spayed indoor cat after she was adopted. She loves hunting things. We have been introducing Theodore to her for a long time now, and they have had several monitored interactions. She does stalk him, but she does not see him as prey due to his size; he’s nearly her size, after all, and does not smell tasty like rodents do, due to the lack of the kind of dander that rodents produce that smells like food to cats. He also is very mellow most of the time and does not respond to her like a skittish prey animal. However, the problems arise when she tries to play with him. Because, of course, playing from cats looks like predatory behavior to rabbits. So, we’ve not felt comfortable letting them interact too much at all now, but they sniff each other through the gate that we have set up between the room where the rabbit lives and the rest of the apartment. They interact, but they are separated enough so that they cannot hurt each other.
I would strongly recommend doing the following things:
1) When you bring the cat in, make the introduction as slow and gradual as possible. If possible, keep the rabbits in a room where they cannot see, smell, or hear the cat. If this isn’t possible, you could try putting the cat into a carrier and covering the carrier so you can transport her inside without them detecting her.
2) Rub the cat with a towel and rub the bunnies with a towel and swap the towels so that each animal can get used to the scent. Do this for the first few days the cat is indoors. Give either animal a treat when they smell the towels, so they can form positive associations with the scents.
3) After three or so days of doing the scent introductions, you can finally allow visual contact to see how the animals will react to each other. Make sure that the cat cannot reach the rabbits, but can see them, and vice-versa. It’s a good idea to keep them fairly far from each other at first, so they can scope each other out.
4) Judging by the reactions of the animals, you can allow them to get closer, or stop the interaction and try again another day.
5) Obviously, you’ll have to use your own judgment to determine what’s best – whether or not you can allow them supervised visits outside of the cage.
Finally, check out this article, it will probably help you a lot. Don’t worry – sometimes it doesn’t work out completely between cats and rabbits, but they normally don’t hate each other and go after one another; though you should be prepared for this scenario.
Good luck!