The former Arsenal player has dismissed suggestions he was upset about being substituted in Sunday's encounter with Levante
The Spain international cut a frustrated figure in the dugout but has stressed that Barcelona's inability to score a second goal annoyed him rather than Martino's decision.
"My reaction after I was substituted? I was frustrated with the game, not that I was taken off," Fabregas told reporters after his side's draw.
"I felt good and we were creating chances. It was the frustration you get when the ball just doesn’t want to go in.
"I have the sense that we could have played better in the first half, but in the second we dominated. We controlled the game, we were a bit unlucky."
Fabregas has been in sublime form for Barcelona this season, netting seven goals in 19 La Liga appearances.