Special vAT declaration from multiple invoices

Hello,

In the second quarter, I received two invoices without VAT (reverse charge VAT, I am VAT exempted) from two different companies in Spain and Germany. Do I need to submit one joint special vAT declaration for these (adding both amounts together and applying 21% vAT), or do I need to submit a separate special vAT declaration for each invoice received on? Thank you in advance!