Will this encounter slaughter my party? I need feedback...

[Kryptik]

Greetings all. At some point very soon, my players are going to have to take a bridge.

Spoiler:

In the middle of this bridge is a troll. The bridge is only 25 feet wide, and so they have to risk an AoO from the troll if they want to get by him.

Party composition: a Half Orc Cleric, a Half Orc Inquisitor, a Gnome Cleric, a Halfling Rogue, and a Human Wizard. All level 3. Nobody's wearing heavy armor, so I'm thinking the troll is going to have an easy time landing those Rends. Then again, our Wizard player loooves to use Flaming Sphere, and has Acid Splash prepared, and between that and the Troll's low AC, I think it's just going to be a matter of how quickly they can burn the troll's HP down sans-regeneration before it causes too much damage.

My backup in case the Troll is too weak was going to be an Adept that casts Protection from Good and Bless on the troll, and a pair of archers behind the troll to provide some ranged support/pick off the Wizard.

I'd say that all my players are skilled gamers, but relatively new to Pathfinder/3.5.

So what do you all think? Too much?

[Lieutenant Addington]

Spoiler:

What's the bridge made out of? Can they just smash it to dump the troll into whatever's below and then cast fly to get to the other side and continue with the mission?

[Kryptik]

Corporal Addington wrote:

What's the bridge made out of? Can they just smash it to dump the troll into whatever's below and then cast fly to get to the other side and continue with the mission?

1) The bridge is stone.

2) They are level 3, and do not have the Fly spell available.

3) Could you spoiler things that appear within my spoiler, please? Thanks

[Nicos]

:

Does aid another funtion win combat maneuver chekcs? if it is the case then, they could try to use bull rush against the troll and make it fall whit the only consecuense of and atack of opportunity.

[Jeremiziah]

I predict that this encounter will not slaughter your party.

Happy to help,

J