The 20-year-old left-back was part of a defence that became the third team in the league this season to prevent the Liverpool forward from scoring as the Foxes secured a memorable 1-0 victory over Jurgen Klopp's side.
Up against the most inform player in the league, Leicester City academy product Thomas had a superb evening stopping Salah from adding to his 15 goals in 19 games season.
"Stop checking what everyone's saying about your performance versus Salah, bro," Maddison shouted at his happy teammate in a video posted on Instagram.
As much as it was an excellent evening for Brendan Rodgers side, it could have gone very differently had the Liverpool forward found the net from the penalty spot and his teammates convert some of the other glaring chances.
Alongside celebrating the result at full-time with Thomas, Maddison played his part in Salah's penalty miss by appearing to get in his head with some of the words he said.
The 25-year-old stood next to Liverpool's no.11 and the attempted mind games seemed to play a part as goalkeeper Kasper Schmeichel guessed correctly and prevented Salah from scoring his 16th league goal of the season.
The rebound was also missed as Liverpool succumbed to their second defeat of the season leaving them six points behind leaders Man City who could extend that lead to nine with a win against Brentford.