There used to be an official Orthodox/Lutheran dialogue and an Orthodox/Anglican dialogue. They have both ended since both of those Protestant groups began ordaining women to the episcopacy among other things. Here are a couple of official statements of the Russian Orthodox Church by Metropolitan Hilarion.
“The introduction of the institution of female bishops will lead to the elimination of even a theoretical possibility of the Moscow patriarchate recognizing the church hierarchy of the Anglican church.”
“A full-scale theological dialogue with the Evangelical Lutheran Church of Finland, as it was in previous decades, has proved impossible today."
And an interview of the Metropolitan by Der Speigel on the cessation of dialogue with the Evangelical Church in Germany.
Question: Because the Council of the Evangelical Church in Germany elected a woman as chairperson in the person of Margot Kaessmann, you have broken off your dialogue…
Answer: It was the way in which some mass media presented the situation, whereas I only said that we cannot continue theological dialogue in the former forms.
Question: Which boils down to the same thing after all. You do not want to have talks with Ms Kaessmann?
Answer: So far we have had meetings between Heads of our Churches, that is to say, between the Patriarch and the chairman of the Council of the Evangelical Church in Germany. Now such a meeting has become impossible.