Abilities like Frost Nova or the DH Caltrops rune which triggers a 2 second Immobilise can be used to stop him in his tracks and avoid being hit.
Thanks, reworded to:
"You can avoid the melee swing that follows Dash by using escape skills like SS, teleport, etc as well as any immobilize abilities like Frost Nova and Caltrops (with 2 seconds stun)"
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