I wish to recommend this book to all those involved in Christian-Muslim dialogue. It is written by the Australian author Richard Shumack who has had many years of ministry in this area. I am recommending this book because Richard engages with Islam in a way that many of us do not, that is philosophically.
I suspect for many of us, myself included, we have engaged with Islam in terms of the texts of Islam, that is, the Qur'an and Hadith, and this is indeed one of our strengths. However, Muslims take much pride in Islam being a deeply rational and reasonable faith - and they see Christianity as irrational. To engage with Islam we also need to address this rational aspect and this is done philosophically.
Richard Shumack's book does this philosophical engagement. Some of the areas he covers are:
Certainty and Doubt
For each of these areas the common Islamic philosophical understanding is explained and critiqued. This was great for learning the history of Islamic philosophy and was also very practical. Then the Christian position was defended philosophically. This book has already helped me in my dialogue with Muslims.
The only weakness I found in the book was that because it focused on philosophy, not texts, I felt there were some important texts that were not considered, however, as the aim of the book was a philosophical engagement this does not take away from the book's helpful contribution.
I recommend this book to all who want to extend their thinking in this area.