Yes, El Cid has been dubbed in both English and Spanish, among other languages.
Some versions of the movie have been edited and rereleased in different versions, so depending on your source, you might be seeing one of these edits.
In terms of the original 1961 film, it has been dubbed for English, Spanish, French and German audiences. There is also a dubbed version in Romanian.
Additionally, there are modern versions that are dubbed for Polish, Russian, and Italian audiences.
If you'd like to watch El Cid in the dubbed version, you can find the movie on YouTube, Vudu, and other streaming services. You can also rent or buy physical copies such as DVDs and Blu-rays in most media stores.
Overall, El Cid has been dubbed in a variety of languages and is widely available so viewers can enjoy the movie in their native tongue.