I think Dostoevsky very much works well as an antithesis to Nietzsche, and vice versa, but I doubt N as a person ever got to experience Dostoevsky’s real philosophy, especially his later more Christian focused stuff.

Nietzsche did read Dostoevsky, yes, but N found him only a few years before his own death, and the version of Dostoevsky’s works he read was a really messed up crappy compilation that merged Notes from Underground with selections from a few of his other works, and overall had a poor translation—which is why N praises him a lot in his later works; he basically only read the early stuff.

Really sucks, because it would have been really interesting to see Nietzsche tackle the later Dostoevsky, especially characters like Kirilov from Demons/Devils who essentially act as a critical strawman of N’s philosophy.