The Livingston attacker managed to prevail in the contest against the Celtic summer signing.
The Australian scored his fifth goal of the season in the second half against Neil Lennon's outfit, sending Livi on their way to a famous three points and consolidating their top six credentials.
For Dykes, the chance to play against a player of Jullien's quality is a big one and he was obviously happy with his afternoon's work.
He reckons that through determination alone he can take defenders by surprise, even if they physically outmatch him.
As quoted by The Scottish Sun, he said: "When you look at some of the defenders they’re a lot bigger than me. But I think they’re not expecting my determination to get the ball.
"I just do what I can for the team. I just do my best every game, it was the same against Jullien. If I get the better of him then I get the better of him. I thought it was a good battle.
"We were going at it a bit. I don’t know how he didn’t get a yellow card against me. He is a great player. I look forward to playing him again."
Not Jullien's finest hour
Jullien has certainly had better days in a Celtic shirt, at times looking either incredibly frustrated with Dykes or simply unable to effectively deal with him. The way that the attacker peeled off the Hoops defence to lop Fraser Forster was likely a worrying sign for Celtic supporters.
The Frenchman appears to be a resolute character though and it's unlikely to dent his confidence too much. A period of rest over the international break will give him the chance to steel himself for big challenges ahead at home and abroad.
Opposition attackers may look at Dykes' performance as a blueprint for getting at the Celtic defence, so it's imperative that Jullien and his coaching staff figure out what went wrong and put it right next time.
With points dropped in two consecutive league matches, supporters will demand all three next time out at home to Ross County.
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