I'm glad you enjoyed reading the summary. You should read it, but it won't be finished until August. I RES tagged you - in August you'll get a note - "remember talking to me back in April - go read this," and you'll think, "what the hell is this?" but hopefully you'll give it a try anyway.
Well, okay, there's a parade. The royal family (the prince, princess, and king) are riding in an old-fashioned carriage. The spy picks up the telepathic communication of the terrorists, who are there to assassinate the prince - they have no idea anyone else in the city is a magic-user, so they're fine with using a method to communicate that others could overhear. Limited telepathy as a normal magical ability was part of the show.
The spy doesn't know their exact plan, just that he needs to save the royal family. He's mainly afraid that the princess will be killed accidentally, as she's one of his people, but he doesn't want the clueless prince to be hurt, either. (He does hate the king, though.)
His first attempt at saving the day is to reach the princess telepathically, but she's too new to magic - he hasn't had time to train her in things like telepathy yet. She can't hear him. He then rushes the carriage and bodily shoves the prince to the floor. The terrorists' original plan was to shoot the prince, and the spy gets shot in the shoulder instead.
The terrorists go to plan B. The spy hears the thoughts of a sorceress as she's charging up her fireball, and through his pain, he manages to call the wind to blow the fireball back at her. He's an extremely powerful magic-user. (Of course he is; he's the main character in a fanfic! But he does have flaws, I swear.)
So, to answer your question, he gets credit for saving the prince's life because he protected him with his body and took a bullet for him. Everyone except the princess and the other spies thinks the wind was just natural, a lucky coincidence.
That last part does sound far-fetched, but the prince and king both believe all magic-users are evil. They would never guess that a good magic-user like our spy would put himself in harm's way to protect the royal family, nor that he would harm another magic-user.
Yeah, the end goal is for the prince and the spy to fall in love; the prince commands the elite guard force the spy has now joined, and I hope they'll be facing threats together. But the writer also considered pairing up the princess and the spy. I think that would almost work better, but no one would read her story if she did that, regardless of how exciting the plot is. Fanfic readers prefer a story with at least a light romance, and they prefer romance between men. I prefer to write romance between women myself, and there's a lot less interest in that. But I'll read anything with an exciting plot.
It was kind of you to let me describe all this to you. I'm sure everyone else in the thread enjoyed talking about their projects, too. You did a good deed here. :-)