"prejudicial against" is correct and usable in written English.
It is often used to describe an attitude, belief or action that discriminates against a certain group of people. For example, "The panel's decision was prejudicial against immigrants to the country."
The entire system's completely prejudicial against immigrants".
The judge rejected the request, saying that that incident was too prejudicial against Mr. Williams.
Harcourt also criticized the broken windows theory for fostering "zero-tolerance" policies that are prejudicial against the disadvantaged segments of society.
After the judge's decision, a defense lawyer, Mark B. Gombiner, requested that Mr. Payen be tried separately, saying his presence would be prejudicial against the other defendants, who were being "held hostage to Mr. Payen's behavior".
But Judge Coleman refused to admit it, saying the details were too prejudicial against Mr. Williams and that the prosecution had sufficient other evidence to prove its charges in the shooting of Mr. Christofi.
The judge, Peter A. Velis of Hampden Superior Court in Springfield, ruled earlier that jurors would see the video, but said Friday that they would not hear the audio portion at the time of the shooting and afterward because it would be too prejudicial against the former chief, Edward Fleury.
And an end to the discrimination and prejudicial assumptions against private hire drivers.
Your article shows a prejudicial view against Germany that still exists in other countries.
In silencing, the audience unjustly denies or discounts the speaker's testimony, due to systematic, prejudicial ignorance against the speaker's identity.
When it comes to spewing prejudicial views against Israel, there are all too many examples of this disturbing practice.
It provides a powerful example of "contact" or "intergroup" theory, which holds that limited interactions with racial and ethnic outgroups may contribute to prejudicial stereotypes against them. .
