Udinese bested the Giallorossi with a late penalty after Roberto Pereyra went down in the penalty area under a fairly innocuous challenge from Leandro Castan.
Zeman said: “I have watched it again and I do not believe that there was a foul for the penalty for Udinese. The referees will decide the championship because that was not a penalty.
“Also today we started well and then conceded the first goal after a foul on [Pablo] Osvaldo and we got nervous. [Pablo] Armero also spat in the face of [Panagiotis] Tachtsidis and these are decisive things on the field and it was difficult to defend for us.”
However, he is not worried about his team despite this being the second time this season they have lost at home after going 2-0 ahead and was happy with some individual performances.
“We can build something here even if at the moment we lack the concentration for 90 minutes,” he continued. “We must believe and keep the same attitude because this team has the resources.
“Dodo? He was not 100% today but he has the qualities, we have seen this.
“Lamela? He scored two goals but also had two misses but he is finding the net and for a striker that is the most important thing.”