Assuming you have a legitimate PSP game ZIP file (e.g., Resident Evil: Degeneration.iso inside a zip), here is how to set it up.
Before downloading anything, you need to understand the tool that makes PSP gaming possible on your phone. Resident Evil 5 Ppsspp Zip File Download Android
However, you can enjoy several other Resident Evil titles on your Android device through the PPSSPP emulator. And if you truly want to play RE5 on Android, use or Steam Link to stream it from your PC. Assuming you have a legitimate PSP game ZIP file (e