Are there any supplications one can say before entering the operating room?

There is no specific supplication that a patient should recite before entrusting themselves to a doctor for surgery or other procedures, because such operations were not known during the time of the Prophet, peace and blessings be upon him. However, a Muslim should turn to Allah Almighty with supplications for safety and healing in any form they wish, and should seek intercession through the beautiful names and attributes of Allah.