Leeds won 3-1 at Elland Road to take a step closer to Premier League safety.
Justin said afterwards: "It's always nice to take the three points back to the training ground. We deserved it. Last week against Arsenal, we had to bounce back from it. The lads put in a great shift and it's a massive three points.
"Some games in the Premier League where a team just blows you away, especially a team of their quality. If you don't turn up at your absolute best then things like that will happen. It was swept to one side and we had to focus on the big game tonight and we did the job."
The defender added: "We're not afraid of anyone in this league and that's the way we like it. We'll fight in every game, give it our all and see what happens.
"Some of the football we played tonight was some of the best of the season. To put in a performance like that is a big one."