The Galaxy-Class would be torn to shreds by Vaadwaar ("Dragon's Tooth") fighters, simply as a matter of being pummeled by superior numbers & the advantage of surprise.
The Galaxy-Class's nacelles & bridge would be the first few targets. The nacelles would be first to go in a blaze of warp plasma, unless the ship's been upgraded to fire multiple beams from the same phaser strips & included the Voyager's "alt future" armor plating generators over the bussards, impulse exaust, & the warp grills. Once it got a good fix on the dead center of the swarm, torpedoes would be all the Galaxy-Class would need to decimate the Vaadwaar.
BUT, the Galaxy-Class...they'd inflict impressive damage on pursuing ships once the bridge crew got its act together & separated the ship, someone headed to the battle bridge & whooped some butt with whatever's hiding under the ass of the saucer section, along the front lip of the stardrive section's docking platform.