Lazio manager Edoardo Reja has praised his team's performance during their goalless draw with Roma.
The Biancocelesti stretched their unbeaten run in the league to six games, and Reja admits that his side were fortunate to not concede against their city rivals.
"In the first half we did very well, creating problems," he told Sky Sport Italia.
"In the second half they came out because they have more dribbling ability, but on the defensive we did well and we did not concede almost anything.
"We've had some chances that we have not taken advantage of, but Roma were crushing us at one point and the boys have held."
Lazio are currently ninth in the Serie A table.