What an extraordinary question.
If you are concerned about your safety in Russia there are many things to have greater thoughts about, like driving on the road.
Rossiya/Pulkovo Tu154s include some of the last built, into the 1990s. They are fine aircraft, robustly built, notably diferent to western products. Nice powerful engines and a well-developed landing gear that makes for nice touchdowns, like most Soviet designs.
Most of their skippers are high-time ex-Russian/Soviet Air Force pilots.
Rossiya have also started using 154s again into Heathrow and Gatwick, you will see them in Heathrow on Saturdays and at Gatwick other days of the week.