What are my rights if I was served a search warrant in a language that I cannot understand?

The fact that you do not understand the contents of the warrant will not invalidate the warrant.  You do not have a right to have the warrant translated before it is served on you.  However, that does not mean that the warrant cannot be challenged.    They should have given you a copy of the warrant.  Take the warrant to a criminal defense attorney to translate and review the warrant for any defects.  If he warrant is invalid, then any evidence seized as a result of the warrant could potentially be thrown out. 

I would keep the search warrant that you were served with that you cannot read which is in a language that you cannot understand and then immediately consult with a criminal defense attorney to discuss and understand the warrant to make sure that your Constitutional Rights were not violated.