Udinese had the opposite experience last Sunday, losing 1-0 to Milan's injury-time winner.
"We too are very confident. Aside from the negative result, we were more than a match for Milan and that boosted our morale.
"We cannot make any mistakes. Our opponents are unpredictable and give few reference points upfront. It will be important for us to maintain our shape in possession, spread the play and make the most of our time on the ball."
Marino is most concerned with Inter's capabilities from set pieces.
"They are good at getting in front of their markers and very strong physically. We must be careful not to give free kicks away around the box.
"Of course, Udinese will really go for it and avoid giving Inter space to run in. At the end of the day, emerging unbeaten from four meetings with Inter would be a respectable result."