Manifesting
Energy Wall (Sonic) around the 4 archers, with damage aimed inward. I'm not sure how they're spread, but I'm assuming I can catch most if not all of them in a ring of up to 15-foot radius.
As a Sonic effect, the wall deals -1 damage per die, but ignores objects' hardness.
Damage dealt to those within 10 feet of the wall (min 1):
Rolled 2d6-2 : 3, 1 - 2, total 2
Damage dealt to those within 10 feet beyond that (min 1):
Rolled 1d6-1 : 2 - 1, total 1
Anyone passing through the wall will take:
Rolled 2d6+4 : 1, 3 + 4, total 8
Basically I'm hoping whatever ranged attacks they make are destroyed before they can reach us.