In this context, the closest equivalent of "or indeed" is "or even",/ "أو حتى". You may even consider leaving it out of the translation..
"or indeed" is usually used to refer to something more general than/ different from what was referred to in the first part of the sentence.
E.g:
for the principle, that any compromise of a misdemeanor, or indeed of any*public offence, books.google.com/books?isbn=1584776188...

I don’t believe Dowty, or indeed any other critic of Government policy, is against initiatives in principle. www.idealgovernment.com/index.php/blog/comments/1516/