Most Greek Horologia still include the (pseudo-)Athanasian Creed, of course without the Filioque. I think this goes back to the time when Greeks had their books printed in Venice. A footnote in a Horologion printed there in 1856 explains:
Semeiosai, hoti to anothen Symbolon tou Megalou Athanasiou, synkrithen tois archaiotatois cheirographois tois sozomenois en te tou hagiou Markou Bibliotheke, kai symphonon heurethen gnesion te kai homophonoun te gnome tes Orthodoxou Ekklesias, edoxe touto typothenai. Ta gar typothenta en Parisiois kai allothi diapherousi kata te ten phrasin kai ten ennoian. Touto de, aparallakton kai tou en Moschodia typothentos, eusebei gnome entautha prosetethe.
"We mention that the Symbol of the Great Athanasios printed above was compared to the oldest manuscripts kept in the Library of St. Mark and, since it was found according, authentic and in agreement with the mind of the Orthodox Church, it was judged fit to be printed. The versions printed in Paris and in other places are discordant both in their phrasing and in their intention (with the Orthodox faith), but this one, just like the one printed in Moscow, was added here in good faith."