To prevent your antivirus from deleting the file again, go to > Manage settings > Exclusions .
In a cracked version of FIFA 13, rld.dll is a dynamic link library file designed to trick the game into thinking it has a valid license. While the original game uses (now the EA app) for DRM (Digital Rights Management), the cracked version replaces the original launcher instructions with the instructions found in this DLL file. Why it often "disappears"