§1. It is solely the right of the Roman Pontiff himself to judge in the cases mentioned in can. 1401: 1/ those who hold the highest civil office of a state; 2/ cardinals; 3/ legates of the Apostolic See and, in penal cases, bishops; 4/ other cases which he has called to his own judgment.
§2. A judge cannot review an act or instrument confirmed specifically (in forma specifica) by the Roman Pontiff without his prior mandate.
§3. Judgment of the following is reserved to the Roman Rota: 1/ bishops in contentious matters, without prejudice to the prescript of can. 1419, §2; 2/ an abbot primate or abbot superior of a monastic congregation and a supreme moderator of religious institutes of pontifical right; 3/ dioceses or other physical or juridic ecclesiastical persons which do not have a superior below the Roman Pontiff.
Source: Code of Canon Law (Vatican.va)