The Geordies sang Benitez's name throughout this rousing finale, a tribute to all he has done, as his team ended the campaign with a flourish in a comprehensive dismantling of Chelsea's tenuous Champions League aspirations.
In what is widely expected to be Chelsea manager, Antonio Conte's final league game in charge, Ayoze Perez scored twice after Dwight Gayle's opener, and the below-par Blues had to settle for finishing fifth.
Newcastle have clung onto tenth place in the table despite four defeats in a row, so need three points to try and ensure a top half finish.
Conte's side still have the incentive of silverware to play for when they face Manchester United in the FA Cup final next Saturday.
"But we have six days to change our approach, our desire, our will to fight".More news: Mariners' Cano may need surgery on broken hand
"Finally, I would like to thank the fans for their unrivalled support of Rafa and the team throughout the season".
"I would like to thank Rafa Benitez for his magnificent achievement this season", Ashley wrote in a statement released after the game.
Antonio Conte, in what may have been his last game as Chelsea boss in the Premier League, decided to make a number of changes for the clash with the Magpies, with the Italian deciding to make a total of eight from their disappointing draw with Huddersfield Town during the week.
Benitez said: "The way that he has been behaving and playing during the season, especially at the end of the season, I think he is a different kind of midfielder so I am sure he will be in consideration". "When I start a season, I have always won".