rules_version = '2'; service cloud.firestore { match /databases/{database}/documents { //Setting condition to col1 documents match /col1/{document}{ //Checking if the requested document is doc1, then let read write allow read,write : if document=="doc1" && request.auth!=null; } match /{document=**}{ // anything else read/write requested will be rejected allow read,write : if false; } } }