The Millers head to the west coast aiming to get their League Two automatic promotion bid back on track following a run of just one win in five games.
They come up against a Shrimps side having problems of their own - without a win in six - but Evans knows it will be a tough game for his men.
"They are full of good players and have a good manager but it is a game that we believe we will decide the outcome of it," he said.
"We will focus on working hard and if we do that I am confident we will get the win we will need.
"They have got good players and goalscorers, but we know they have taken points off the bigger teams."