The Centaurs weren't weak creatures.
It is just Sylvian and the other two were expert Arcane Explorers with complete sets of offensive Artifacts.
Whether it is close combat or ranged battle, they have weapons meant to deal with their enemies. Just like the fire magic that killed most of the Centaurs…
Unfortunately, they obviously lack defensive Artifacts which killed them in the end.
On the other hand, the Centaurs were already injured as well making the fight a lot easier for Sylvian and the others.
"Ugh… So you have to ask that." They seemed to be annoyed.
They could still remember that Cyril's fellow humans destroyed their settlement. Although Cyril allowed them to escape in the end, they still don't feel any better at all.
Nevertheless, they are planning to take refuge at another centaur settlement, and Cyril together with the two female humans were walking in the same direction.