The Oranje required a remarkable late comeback to overcome El Tri on Sunday, with Wesley Sneijder levelling before substitute Klaas-Jan Huntelaar struck from the spot in stoppage time to secure a 2-1 win.
Robben was taken down by Rafael Marquez for the deciding spot-kick and insisted after the last-16 clash it was "definitely a foul", but courted controversy by admitting he had taken a tumble earlier in the match.
It was a "stupid action" he reportedly apologised for before and after avoiding punishment from FIFA, with head of media Delia Fischer saying the disciplinary committee would only look retrospectively at "serious infringements"- a decision the winger had expected all along.
Asked if he thought he would be sanctioned, Robben said: "No, not at all, why? No.
"I was not afraid, no. I am an honest guy. Nah, nothing. It had no influence on the game."
Before speaking to the media, the Dutch FA (KNVB) felt it necessary to issue a statement insisting Robben's comments to NOS had been misinterpreted.
There was no chance of misconstruing Mexico coach Miguel Herrera's comments, though, as he accused the winger of committing three dives during the match in Fortaleza.
Robben had no problem with such opinions and will remain as honest as ever, despite uproar following his comments.
"I don't change myself," he said, speaking at the Dutch training base in Rio de Janeiro. "That's my personality.
"I think it's good. I apologised for one stupid action, but it didn't have an influence in the game.
"We had two clear penalties, one was given. That is it. I don't think we should talk about it any more."
Instead, Robben and team-mate Sneijder preferred to focus on Holland's collective success ahead of Saturday's quarter-final against Costa Rica.
"The Central Americans are doing very well in this World Cup," Sneijder said. "After a hard game against Mexico, this will be another one. They will have more fans than we have.
"Yesterday it was the same, but it's something nice as well: better than having nobody here.
"We can expect more fans of Costa Rica, but it's good. It's good. We are in South America, so it's a perfect situation."
- Sports & Recreation
- Wesley Sneijder
- Rafael Marquez