http://www.emmerich1.com/DOLOROUS_PASSION_OF_OUR_LORD_JESUS_CHRIST.htm#PREFACE%20TO%20THE%20FRENCH%20TRANSLATION
I haven't read it myself but I'm willing to bet that it is no more "anti-semitic" than Mel's movie, which is to say it probably isn't anti-semitic at all.
I think they are saying this was one of the main sources for the movie script. I wouldn't be surprised if the bridge scene is in this book.