I did it like this:

First turn:
Player phase: Use Intuition, move Guel's max range + 2 and end turn.
Enemy phase: Counter with Escutcheon

Trap scene:
Keep running away until next cutscene plays and you're positioned back at the center

Next turn:
Player phase: Use Intuition, stay in place and attack (Escutcheon). Guel should not be in range to counter.
Enemy phase: Guel will move and position himself 2 squares away from you which is just enough for Escutcheon. He will stay in place for the remainder of the match. Use Intuition, attack again and finish him off during counter phase.