Roma clinched a seventh successive Serie A victory on Friday when a 4-1 thumping of title rivals Fiorentina also boosted their Champions League qualification campaign.
On-loan striker Stephan El Shaarawy, Mohamed Salah, with two goals, and a Diego Perotti strike allowed Luciano Spalletti's third-placed side to cut the gap to leaders Juventus to five points.
Francesco Totti, who has been locked in a bitter dispute with the club over a contract extension, almost completed a perfect evening at the Stadio Olimpico.
As time ticked down, the 39-year-old substitute just brushed a post with a long-range free-kick.
The defeat left Fiorentina in fourth spot, three points behind Roma but eight off the pace being set by champions Juventus.
Victory was Roma's second in the league over Fiorentina this season but they had lost to their rivals twice at home in the Europa League and Italian Cup.