Can I log multi-engine time abroad, when I'm not rated for multi in that country?
FAR 61.3 stipulates what is required to fly N-registered aircraft outside the united States.  There is nothing about flying non N-registered aircraft outside the U.S.  Rightfully so, the FAA does not have jurisdiction in that case.

To answer your question, you will need to reference that country's rule.  If they are an ICAO country, the rules are probably very similar.