It is not known whether Russia agreed to the request, which comes against the backdrop of the growing partnership between the two countries and would represent a significant policy change
https://www.haaretz.com/middle-east-news/iran/2022-11-04/ty-article/iran-reportedly-approached-russia-for-help-developing-nuclear-program/00000184-42c9-d1b9-a186-4ac9c2050000