What are the best faith-based tips (Qiyam al-Layl, reading Surat al-Baqarah, best Dhikr) that can help my sister suffering from metastatic breast cancer, taking into account her struggle with the effect of the "evil eye"?

Every divine decree from Allah is good for the believer, and Allah is more merciful to His servant than a mother is to her child. He decrees trials for the mercy and benefit they contain. If you are patient and content with Allah's decree, your reward will be immense, for Allah the Almighty says: "Indeed, the patient will be given their reward without account," and "No disaster strikes except by permission of Allah. And whoever believes in Allah - He will guide his heart." So be patient and content, and know that good lies in what Allah has decreed. Strive in supplication, especially during times when prayers are answered, and turn to Allah, who is responsible for answering the distressed. You should also perform ruqyah on yourself with Surat Al-Fatihah, Al-Mu'awwidhat (Surat Al-Falaq and Surat An-Nas), and Ayat Al-Kursy, and repeat the supplications for healing authentically reported from the Prophet, peace and blessings be upon him.