Try to safely retrieve the magical torch. You can use it to search the cavern as well as to see what is in the rest of the cave.
Leave the magical torch where it is, light your own torch and continue to search the cavern you're in.
Try to search the cavern you're in, despite the current dimness.
Explore one of the adjoining tunnels swiftly, despite the dimness, before any other raiders can launch a counterattack.
Return to the cave entrance to let Mistress Faye and Martelo know what has happened and get their suggestions.
Shout out for any remaining raiders to surrender or be killed.
Some other creative solution? (please comment)