To protect yourself, always use reputable antivirus software, scan any downloaded files before opening them, and consider the legality of accessing paywalled content for free in your jurisdiction.
If you are looking for a specific type of file or trying to troubleshoot an archive, can you tell me: Are you trying to open it on a computer or mobile device? FC2-PPV-1855975-2.part1.rar UPD
If you’d like a safe alternative, tell me which of these you prefer and I’ll prepare it: To protect yourself