Said to someone who is ill
لَا بَأْسَ، طَهُورٌ إِنْ شَاءَ اللّٰهُ
Lā ba'sa, ṭahūrun in shā' Allāh
No harm; it is a cleansing, if Allah wills — meaning the illness washes away sins.
When you visit someone who is sick. · Ṣaḥīḥ al-Bukhārī 3616
Over yourself, or over someone who is unwell
Du'ā for illness and pain
The Prophet ﷺ visited people who were ill and said short wording over them. There is also what to say when a particular place in your body hurts.
2 du'ās, with their sources
For a pain in the body
بِسْمِ اللّٰهِ ×٣، أَعُوذُ بِاللّٰهِ وَقُدْرَتِهِ مِنْ شَرِّ مَا أَجِدُ وَأُحَاذِرُ ×٧
Bismillāh (3×), then: Aʿūdhu billāhi wa qudratihi min sharri mā ajidu wa uḥādhir (7×)
In the name of Allah. I take shelter in Allah and His power from the harm of what I feel and what I fear.
Put your hand where it hurts and say it. · 3× then 7× · Ṣaḥīḥ Muslim 2202
How and when to say them
One is said when visiting someone unwell. The other is said with your hand on the place that hurts, three times, then the rest seven times.
Every du'ā above can be heard aloud. Where the words are Qur'an, the Arabic comes from the Quran.com API and is shown exactly as served, with a link into the muṣḥaf.
Other moments
Du'ā for travelSetting off, stopping on the way, and coming homeDu'ā for anxiety, worry and griefWhen the chest is tight and you do not know what to doDu'ā for protectionMorning, evening, and over those you loveDu'ās through the dayLeaving home, eating, the masjid, rainDu'ā before sleeping and on wakingThe last words of the night and the first of the morningDu'ā for study, exams and hard tasksBefore you learn, before you speak, before something difficultDu'ā for parents, spouse and childrenFor the people closest to youDu'ā for debt and provisionWhen money is tight and rizq feels far