A frequent speaker and workshop leader, he is the author of several books, including Prayers of the Cosmos (1990), The Hidden Gospel (1999), The Genesis Meditations (2003), The Sufi Book of Life (2005), Blessings of the Cosmos (2006), The Tent of Abraham (2006) (with Rabbi Arthur Waskow and Sr. Joan Chittister) and Desert Wisdom (1995, revised 2010). He has also produced three audio series of teachings on the Aramaic approach to Jesus, published by Sounds True.
Known also for his citizen diplomacy work, Neil led several group trips to Russia and the Middle East and in 2004 and cofounded the Edinburgh International Festival of Middle Eastern Spirituality and Peace. In 2005 he was awarded the Kessler-Keener Foundation Peacemaker of the Year award for his work in Middle Eastern peacemaking.
Under his Sufi name, Saadi Shakur Chishti, Neil also offers spiritual retreats combining his work with Native Middle Eastern spirituality with the lineage of Chishti Sufism. He was a long-time student of the Murshid Moineddin Jablonski (d. 2001), the spiritual successor of Sufi Ahmed Murad Chishti (1996-1971). Saadi was recognized as a teacher in the Sufi path in 1981 and a senior teacher, or murshid, in 1993 in the Chishti Sufi lineage.