By ‘religious conflict’ [Jonathan Fox] doesn’t mean one that is just about religion - such conflicts are few and far between. Rather, he means one in which religion is a significant factor, meeting at least one of these criteria:
It is between groups who belong to different religions;
It is between groups that belong to different denominations of the same religions (e.g. Protestants vs. Catholics or Sunni Muslims vs. Shi’i Muslims)
The issues in the conflict include (but are by no means limited to) significant religious issues, such as state religion policy or the role of religion in the regime. These issues need not be the most important issue in the conflict but they must be among the central issues in the conflict.