With the Blaugrana boss recovering from a cancer relapse, the assistant coach has been placed in temporary charge, but after a scintillating first-half of the campaign, their form has dipped since the turn of the year.
Barca were beaten 2-0 in the first-leg of their last 16 Champions League clash with AC Milan and then suffered back-to-back Clasico defeats to Real Madrid,
But after beating Deportivo La Coruna 2-0 on Saturday, Alves was quick to hit out those who had previously criticised Roura.
“If we win everyone is quiet and Jordi is the best,” he told reporters after the game. “But when we lose people have to have someone to aim their anger at.
“We don't listen to any of that. Everyone knows how important Tito [Vilanova] is for us, but when the boss is not here that's when we see how good the team really is.
The Catalans will still need to produce a remarkable comeback if they are to overcome Milan on Tuesday, but Alves says confidence has been boosted on the back of their league win.
“We go into the Milan game with a good feeling now. We played against Deportivo without fear and without nerves."