The latter was left out of Portugal's starting lineup against Switzerland for their World Cup round of 16 clash.
The Portuguese appeared to improve after Ronaldo's removal from the line-up, with replacement Goncalo Ramos scoring a hat-trick in a 6-1 win.
“Do you think anyone likes to be on the bench? I don't think Cristiano would be happy," Fernandes said to reporters.
“If the manager put me on the bench in the next game, I would be angry."
He added: “Cristiano is doing his job, he's doing his part, he's happy with the result because the goal for everyone is to go as far as possible."