The Spaniard is backing the Heed’s legends match with the Premier League side’s former heroes in April.
He will give two lucky fans the chance to spend some time with him at the International Stadium next year.
Rafa is right behind the fundraiser and the tickets will be auctioned off to help raise cash for the National League club.
Benitez said: “I am delighted to donate this unique experience to the fans who buy the lucky tickets.
“Gateshead and Newcastle United have had many connections over the years and I hope the match between Newcastle Legends and Gateshead Legends is a big success and raises a lot of money for the club and their foundation.”
Newcastle Legends Managing director Steve Wraith was delighted with the unexpected bit of help.
“This is a great offer from Rafa and is a prize that any football fan would love to win,” he said.
“After speaking to Gateshead Football Club we have decided that ticket numbers 999 and 1000 will win this unique prize.
“We are not far away from those sales now so anyone buying tickets as a last minute Christmas present may just get an unexpected surprise!”