Randy Orton was one of the most important parts of John Cena's career and faced him at a lot of different occasions. The two even faced off at this year's Backlash PLE for the Undisputed WWE Championship. Unfortunately, Orton might not be able to attend his rival's final match at Saturday Night's Main Event.John Cena is set to compete in his retirement match against Gunther at the upcoming Saturday Night's Main Event. It's going to be Cena's last match as an active professional wrestler. A lot of WWE stars including Cena's old rivals are set to be in attendance for the event to see Cena's last match. However, Orton might not be able to make it to Saturday Night's Main Event.As reported by Inside The Ropes Wrestling, Orton is currently in Saudi Arabia to attend the inauguration of Mr. Beast's Mr. Beast Land. This came as a partnership between WWE and Mr. Beast along with the company's continued relatationship with Saudi Arabia stemming from their numerous Premium Live Events in the country in the past.Fans around the world are furious that Randy Orton won't be able to attend Cena's last match as it would be logistically impossible for him to travel to the United States and make an appearance in such a short time.Randy Orton was John Cena's first feud after WrestleMania 41At WrestleMania 41, John Cena beat Cody Rhodes in the main event of Night 2 to win his 17th World Championship. He opened the next episode of Monday Night RAW and was attacked by Randy Orton setting up their match for the next Backlash PLE in Orton's hometown of St. Louis.The two had a lot of interesting segments leading upto their match and also put on a great match at the event. Cena won the match after R-Truth interfered and cost Orton the Championship. Their match featured a lot of callbacks to their previous encounters.Fans are now looking forward to see Cena compete in his final match against Gunther at Saturday Night's Main Event.