[X] "I work for no guild, but in the name of all that is right and good!"
-[X] "And if you're also good guys, that does mean we should be on the same side."
[X] Demand a lawyer.
-[X] And if they refuse to give you one (or otherwise try to attack you), play Defense-Fu.
--[X] By which I mean don't attack them directly, but use your magic in such a way that they only succeed in hurting each other if they insist on fighting you, so that it becomes clear that they'll be perfectly fine if they're peaceful and cooperative instead of angry and aggressive.
---[X] Jake seems nice. Make extra effort to make sure that Jake doesn't get hurt. You could probably use him as an ally if he survives this. He'd probably be grateful toward you for such a gesture as well.