The Fenerbahce coach is well aware of the threat the Italian giants pose, and knows an advantage going into the second leg in Rome is imperative
The 47-year-old has warned of the quality of the likes of Miroslav Klose ahead of the tie, and is adamant the Turkish side will have to take an advantage with them to Rome for the return fixture if they are to have a hope of reaching the last four.
"This is a two-leg situation and tomorrow we'll be conscious that we'll have to go into the second match with an advantage," Kocaman told reporters.
"Lazio are one of the leading teams in Italian football. They're a strong team with some great players, like Miroslav Klose, and I believe this quarter-final contest will be breathless until the last minute of the second leg.
"We're facing a very strong, valuable team, but it is more important to focus on putting in a good performance than worry about our opponents quality," he continued.
Kocaman also added that the Fenerbahce home support could play a pivtoal role in the tie, with Turkish grounds famous for the intimidating atmosphere generated on nights of European football.
"We're always saying that our power comes from our supporters," he went on. "When they support our players positively, especially when the things are going wrong, it will give us strength."