I give this flick a two because of the good idea. Finding a part of the real cross and being attacked by demons, could have been a good story.
But ... At the first pictures of the movie you see crusaders after the war in clean cloth, with clean faces and fingernails. Well thats the point where you have to realize that it will be something like a lame Scifi channel production. But it gets worse.
The discussions are what makes this movie really unrealistic. From the beginning of the movie everybody permanently tells the crusaders that the crusade maybe was a bad idea and it may not have been a holy war. When this the first time happens i got a smile on my face because i thought: All right heretic, that were your last words and now the slaughtering starts. But the crusaders in this movie are real open minded. They are open to discuss everything. Its allowed to call the crusade a bad idea all the time, its allowed to tell them that muslims and christians are basically the same religion and it is also allowed to tell them that Jesus was not the son of god. They are fine with all of that. The Muslim warrior which joins them later is also open for all this questions. The crusaders and the Muslim warrior do not have any problems with each other because ... the war is over.
Oh, by the way. Now and then some bad made CGI creatures appear and disturb their discussion.
I did not watch the movie to the end. If i want to see a hypocritical debate about religion which includes some ugly creatures, then i just will watch the next TV debate about this subject.
So what is this all about? It seems like someone wanted to make a movie about religious tolerance between muslims, cristians and atheists based on the example of a happy group of crusaders and Muslim warriors. Well, good for him. But next time he should show this to his left wing lesbian vegetarian discussion group in private and do not publish it and steal 1,5 hours of the live time of fantasy movie fans.