Following Raven, Shavah and Hiritus both move to cut off the bear before it reaches the main camp.
Orbril: Your alchemist's fire hits dead on-target, and the bears fur ignites. For the moment, though, it seems unrelenting -- although unconcerned with you, as well.
Fendric: Your spell is felt by all within the group (note: posted rolls further down are adjusted to account for this bonus.) As far as where the bear is headed, it doesn't seem fixated on a single target, but seems intent on entering the circle of your camp (by your next initiative, it will be clear that it is not interested in anyone who has engaged it -- which accounts for everyone except you, Niccolo, and Nurthk.)
Nurthk: Griscle's training appears not to have softened a bit, as his teeth sink down into the bears throat. Still, he doesn't appear to have drawn a deep wound; the trickle of blood can barely be seen in the night.
The bear responds immediately, raking a pair of claws across Griscle's body before responding with a bite of his own (claws hits AC 23, 15 damage, hits 30, 9 damage; bite hits 25, 15 damage).
Oliver: You find little trouble getting into position to flank the bear; it is distracted with Griscle at the moment, to the dog's misfortune, and seems primarily concerned with getting past anything in its way.
Raven: Your attack connects, stopping the bear in its tracks for at least a moment...
...enough time for Hiritus and Shavah to assume their positions at either side, creating a solid wall of sword against the bears forward progress, although both of their attacks fail to connect.
The alchemist's fire sizzles out on the bear's hide, and we are back to Orbril's initiative.