If enemies see you coming too close to them helpless, they'll just straight up rape you instead of even bothering to attack. This is based on what Devious devices you're wearing. A bunch of them are selected by default to trigger the attacks when worn, but I suggest changing those to your own preferences. Followers are in danger as well.
All the nearby enemies will take turns, and there's no early escape. However, once satisfied, they will let you go. There is a short grace period of random duration to give you a head start on running away. Same enemies also won't try to rape you again for 15 minutes from the initial attack trigger.
There's also an option for the attackers to remove worn chastity belt, but that only works on the two ones that come with Integration, not with belts from any other mod. Optionally, it can be set to be removed only if the attackers your you have the correct key. For the attackers to have keys, I recommend installing Devious Devices - For the Masses as well.