Petkovic said that his team have put that euphoria behind them now and are fully concentrated on their trip to Turin.
"The effect of the derby has now worn off and we know we'll be facing a great team," ESPN quotes Petkovic as saying.
"Juventus are the Scudetto favourites and we want to see how we measure up.
"We're aware we will need to be at 150% if we're to take a positive result from the game. We need to be compact, cynical, highly disciplined and focused, without giving anything away."
The Bianconeri lead Inter Milan by four points at the top of the table.