There seems to be quite a lot of discussion among Evangelical Protestants these days about the Calvinist penal substitution theory of the atonement. I've tried to give an Orthodox take on it in an article on
Salvation and atonement on my Khanya blog, as it seems that it might be closer to what those who are unhappy with the penal substitution theory are looking for.
Comments and criticisms welcome, of course, but also it might be something that Orthodox Christians could discuss with their Evangelical Protestant friends.