Ah interesting. This is on the bodyguard role page on mafiascum:
"...As a protective role, Bodyguard is essentially a weakened Doctor. Not only can it only successfully protect once, but it also does not technically stop the kill from going through. The only benefit from a successful protection is essentially a redirection of the kill from someone who is presumably more valuable to keep alive. In games where protection is desirable but a full Doctor could lead to overpowered role combinations, Bodyguard is a decent consideration.
As always, including multiple protective roles in the game can lead to broken role combinations. Doctor+Bodyguard can lead to circular protections, as can Bodyguard+Bodyguard . If you are going to include these combinations in your game, make sure you specify how they work - presumably in a way that does not allow them to cross-protect successfully.
Essay Pro