1st request: I could swear I remember a fic based on Irresistible where Lucius was going to have sex with Teyla and/or Elizabeth while they were drugged and John stopped it by offering himself in their place. Or maybe it wasn't one of the girls being targeted; it was a while ago.
2nd request: Two evil sisters captured John and Rodney. John is tortured by the sister who chose him. Rodney is pampered by the sister who chose him, because she thought Rodney was "King of Atlantis" because they overhead John call him that. When Rodney says that was just John using sarcasm and there is no king, the sister goes crazy, talks about how she is offended or something. I don't quite know how it got to the ending, but the sisters were afraid of Atlantis if they hung onto the boys, but wouldn't let them go unpunished, and so made Rodney rape John. John told Rodney to do it so they could go home; a rescue attempt risked casualties.