Enough warnings. Here is how to watch Asterix e Obelix: Missão Cleopatra in Brazilian Portuguese dubbing in high quality, legally, and without malware.
Yes, the Asterix & Obelix XXL games have received multiple remasters. If your original search intended the video game:
Buy the movie on Amazon Prime Video or Apple TV, then use authorized download features within their apps (offline viewing). Both platforms encrypt the file, but you legally own the right to watch offline.
If you need an unencrypted MKV/MP4: Purchase the Blu-ray, then use MakeMKV (free for DVD/Blu-ray ripping) to create a personal backup. This is legal in many jurisdictions as a "space-shifted" copy, provided you do not distribute it.
Almost certainly, the searcher is mixing up the movie with the game "Asterix & Obelix XXL" (released 2003) or "Asterix & Obelix: Mission Cleopatra" (the GBA/PS1 game). Older PC games required .exe patches or cracked .exe files to run without the CD. Someone may have downloaded a "patched" version of the game and erroneously appended the same term to the movie.
If you ignore all advice and still search for "asterix e obelix missao cleopatra dublado avi patched" on Google or torrent sites, here is what you will actually find:
Never run a .bat, .reg, or .exe file that comes with a movie download. A movie file has no business including executable code.