The Russians haven't just invested in ground-to-air systems, they've also invested heavily in electronic warfare, it's going to be a challenge to keep the communication link to a close air support UAV working.
Their bigger systems look reasonable on paper, but I doubt they would be up to the task of dealing with high end comms in an actual combat environment. They can barely keep them alive in Ukraine and from what open sources are reporting are either not very effective or deployed in such small quantities to be effectively nonexistent for the majority of areas seeing combat.
Sure, Iran was able to down a stealth drone years ago by messing with the electronic nav systems, but it wasn't like there was actual combat happening, and I don't think they have repeated that since then.