The Guardian's Counter power from the Guardian theme has the following text:
Trigger: An ally within 2 squares of you is hit by an attack and you are not included in the attack.
Effect: You and the ally shift up to 2 squares as a free action, swapping positions. You become the target of the triggering attack, in place of the ally. After the attack is resolved, you can make a basic attack against the attacker.
Say Jhank the Paladin has this theme, and has an enemy marked with Divine Challenge. That enemy then chooses to attack one of Jhank's allies, and hits successfully, at which time Jhank decides to use Guardian's Counter to take the hit instead.
Does this count as the enemy defying Jhank's mark for triggering Divine Challenge, even though Jhank was the one who eventually took the attack?
(If the answer is specific to Paladins or Divine Challenge, please mention such, and under what conditions the answer would be different.)