Robins said: "We know it's a really difficult challenge. I hear people saying Manchester United are this or that. The truth is they have top players. We have got to be able to deal with the situation and the threat they pose.
"You have to go into this game understanding what the threats are. For people who are talking about United conceding a lot of shots, you are talking about a team which is full of talented top players.
"Most of them are international players, if not all of them, with a lot of really positive attributes. We know they are favourites to win this game by a million miles.
"We have to understand what this game is going to be, what the occasion is and the fact there shouldn't be any fear.
"Manchester United are the biggest club in the world, we know they have got top talents. If you cannot go and enjoy that, you shouldn't be playing."