The former Manchester United captain became Lambert's assistant at Villa Park earlier this summer, and the Midlands club began their Premier League campaign with a 1-0 win over Stoke City.
Keane, who has managerial experience with the likes of Sunderland and Ipswich Town, is also number two to Martin O'Neill at the Republic of Ireland.
Pardew thinks that Keane's experience both as a player and manager can only have a positive impact at Villa Park.
Speaking to The Chronicle ahead of the two sides' meeting this weekend, Pardew said: "Roy is a good football person and a good person to have in the dressing room, but I also think Paul Lambert is a great manager.
“It strengthens his hands to have good people around him, as John (Carver) is for me. I am looking forward to testing the technical game we are going to have.
"We face a Villa side which has just picked up an away win and in the Premier League. That is gold-dust, so they will be feeling fairly confident to turn us over at home and we have to make sure we are a really stiff opposition."
The Newcastle manager also explained that Remy Cabella may have a crucial part to play at Villa Park on Saturday afternoon.
The flamboyant Frenchman made an eye-catching debut last week against Manchester City, and the £12 million arrival from Montpellier could be one of the side's tormentors-in-chief this season.
His close control and ability to beat a man was evident throughout against City, and even though not everything he tried came off, Pardew thinks that Cabella could be decisive against Lambert's charges.
"Cabella should see more of the ball and make more moments happen," added Pardew. “He is an exciting player. He plays with a smile on his face, we have enjoyed his company so far, and we hope he brings that smile he has on the training ground to the game on Saturday.”