There's a strong link between the Eastern religious practices and the mystic aspects of Abrahamic religions; think gnosticism and hermeticism, or perhaps kabbal

There's a strong link between the Eastern religious practices and the mystic aspects of Abrahamic religions; think gnosticism and hermeticism, or perhaps kabbalah and sufism (I haven't really studied these but they might be good avenues). Eastern Orthodox Christianity retains much of the mystic traditions, for example hesychasm is comparable to meditation.