Chariot

[Armoryk]

I've had luck with Gladiators and Velites/Light Auxilia against Chariots, backed up by archers (Cretan, Roman or Auxilia) with flaming arrows.

The Gladiators, and later the Arcani also, use "stop, drop and roll" techniques against the chariots, especially good against the Scythed or Heavy types. Zoom in on a battle between Scythed chariots and Gladiators/Arcani to see what I mean. You'll see them on the ground and think "damn they died easy...thought they had a bonus against chariots." But you'll see instead that they pop back up again after the chariot goes by and now they have the chariot flanked.

Also, they don't rout as easily as regular infantry (I've seen gladiators fight to the last 2 men without routing or "fighting to the death", whereas Eastern Mercs will flee after losing 2 men out of 120 to chariots), and they don't mass up for easy plowing like spear troops. This helps to pin the chariots down for missile fire or cavalry charge. Once they are embroiled with infantry and under missile fire, you can run em over with your horses from the rear.

Soon you'll see those little chariot wheels rolling off by themselves while the chariot, horse and rider lay in a crumpled heap behind.