The Scottish star was happy with how the team set up to nullify their recently promoted opponents, as they had to work hard for all three points in the contest.
Despite a 3-0 scoreline in their favor at full time, Robertson knows the game was not as easy as the score made it seem.
Asked if they had to be patient in this game, Robertson said, per the club website: "Yeah, of course, playing against a team that are really good defensively – five at the back, three kind of big centre-backs, a dogged midfield and two really good strikers.
"So we knew it was going to be tough, we knew we had to be patient and it was just trying to get that breakthrough. It was obviously a frustrating night on Thursday, I think everyone felt it in here.
"You could sense the fans just wanted the first goal to maybe relax them but we had to stick to what we'd trained, what we'd planned and luckily we got the breakthrough just before half-time. And I think the second half was a really good performance."