Pronunciation: La ba'sa, tahuroon in sha' Allah.
As'alullahal-'Azeenm, Rabbal-'Arshil-'Azeeem, ay-yash-fi-yak
Meaning: No harm, (it will be a) purification (from sins), if Allah wills.
I ask Allah the Great, the Rubb of the Great Throne, to heal you
Virtue: Ibn 'Abbas (May Allah be pleased with them) reported: The Prophet (ﷺ) visited a bedouin who was sick. Whenever he visited an ailing person, he would say, "La ba'sa, tahurun in sha' Allah [No harm, (it will be a) purification (from sins), if Allah wills]."
Ibn 'Abbas (May Allah be pleased with them) reported: The Prophet (ﷺ) said, "He who visits a sick person who is not on the point of death and supplicates seven times: As'alullahal-'Azima Rabbal-'Arshil-'Azimi, an yashfiyaka (I beseech Allah the Great, the Rubb of the Great Throne, to heal you), Allah will certainly heal him from that sickness."
Reference: Al-Bukhari Book 7 Hadith 907, Abu Dawud Book 7 Hadith 906