The Turin club are just three points above the relegation zone, while the Roman outfit are eighth in the standings.
"Roma attack with eight players at a time and they do it for 90 minutes," said Ventura. "If they lose possession, it's normal that they will concede at the back, but at the other end they are capable of scoring at any minute.
"We must realise that we are going to suffer at the back, but if we interpret the game correctly, then we can impress here [in Rome].
"The statistics suggest Roma will score one or two goals at least, but then we don't know how many we will get. It's going to be entertaining!"
Torino have won just once away from home in the league so far this season.