But, having been told by Tottenham manager Mauricio Pochettino to keep his emotions under control, this time Alli didn't react to Shelvey's foul.
"I've had a few talks with the gaffer [Mauricio Pochettino] and a couple of people", Alli said.
Newcastle's Shelvey was sent off early in the second half at St James' Park for stepping on Alli's ankle while the England playmaker was lying on the pitch.
Shelvey made a fool of himself when he unnecessarily stamped on Alli with the referee standing close by.
"It's something I like to keep in my game and it was a game today when we had to keep our cool".
Walker-Peters, a World Cup victor with England Under-20s over the summer, said: "Playing here, it's a fantastic stadium and most importantly we got the three points, got a good start in the league".
"We knew it was going to be a physical game". "They didn't make it easy for us and it's a hard place to come". There was no need to react today.
A tepid contest devoid of goalmouth action in the opening half sprung to life after Shelvey was dismissed for a petulant stomp on Alli, who pulled all the strings for last season's Premier League runners-up.
On the game, Benitez added: "I was happy with the effort of the players".
Rafa Benitez says Jonjo Shelvey apologised to his team-mates for his sending off.
"Hopefully he will learn from it".
"He knows he has made a mistake and he has apologised but it changes nothing now".