The Warriors face a crucial second game in their European Champions Cup campaign against the Irish side after losing their opener to Exeter on Saturday.
Leinster could be strengthened by the return of Jonny Sexton and Sean O'Brien to the starting lineup. Both players missed out on the win over Montpellier through injury.
Speaking to Sky Sports, Tommmy said: "They are world class individuals and add a lot to a side. Leinster are already stacked and have great strength in depth and had a great win at the weekend despite having those guys on the sidelines so obviously it shows the quality they have.
"When you add in these world class players, it's pretty strong opposition to come up against and we'll be looking to make sure we try and nullify those threats they have all over the park as early as possible."
Defeat at Exeter saw an end to Glasgow's winning start to the season and Tommy admitted they need to sharpen up if they want to make an impression in the competition.
He said: "You're under pressure from round one, and if you don't pick up a win then you're chasing some teams in your pool and ours is an incredibly difficult one to get out of."
He added: "We know we didn't click fully on the weekend. There's a few things we left out on the park and didn't execute properly.
"They were pretty ruthless but we have areas we need to sharpen up on and we knew that coming off the pitch."