Hii..

If you want to study your Masters in Germany then the language required for that is:

If your course is in total German language then you have to submit proof of proficiency in German language .. German as a foreign language test (TestDaF)....and

German language test for the admission of foreign study applicant (DSH)..

And if the course is in  English language then the proof of proficiency in English language required  such as TOEF, IELTS, PBT..

All the best!!