Delete rows containing same string

Hello!

I have two columns. Column A has a number, then a "/" and then a name:

"
123456 / John Doe
23442343 / Test Name
6323432 / Clara Test
"

Column B has just names:

"
Jason Doe
John Doe
Marc Test
"

Now, I want to delete all rows in column A which contain names from column B.

In this case I would want column A, to look like this:

"
23442343 / Test Name
6323432 / Clara Test
"

How would you do this?

Thank you very much!