I have been studying the Scythians, and I think what you might be referring to is the fact that the Scythians were pre-cursors to the Tocharians, who migrated out of Scythia into China's Tarim Basin, along the Silk Road. They referred to themselves as "the Buddhi"
and learned of Buddhism from the Scythian Kushites in northern India, due to their proselytizing efforts along the Silk Road, in approximately 100 CE.
A large cache of Tocharian texts was found, starting in the late 1800's and into the early 1900's, which demonstrates a philosophy which was not only Buddhist, but also Taoist nature.
Siddhartha Buddha and Lao Tzu were born in the same century (6th BCE). The Tocharians were situated along the Silk Road in such a position as to gain the best of both worlds, as they were in-between India and China.
The Tocharians migrated far and wide, even into Viet Nam and Malaysia, where Tocharian artifacts, such as statues of people seated in the lotus position, have been found, which have been attributed to them.
Tocharian mummies were found, in the Tarim Basin, dating back approximately 4,000 years. They had light colored hair and blue eyes.
I think this might answer your question.
As far as I can see, the Scythians of the Caspian Sea area did not meditate.