Start with this Du'a
When you sneeze
الْحَمْدُ لِلَّهِ
Alhamdu lillah
“All praise is for Allah.”
Sahih al-Bukhari 6224
Islam turns a sneeze into an exchange of praise and mercy: the one who sneezes praises Allah (SWT), the one who hears says Yarhamuka-llah, and the one who sneezed answers Yahdikumu-llahu wa yuslihu balakum.
Alhamdu lillah
“All praise is for Allah.”
Yarhamukallah
“May Allah have mercy on you.”
The sneezer then replies: يَهْدِيكُمُ اللَّهُ وَيُصْلِحُ بَالَكُمْ, May Allah (SWT) guide you and rectify your affairs.
Yahdikumu-llahu wa yuslihu balakum.
“May Allah guide you and set your affairs right.”
The Prophet ﷺ replied this way when non-Muslims sneezed near him and praised Allah (SWT).