لا تَمَسُّ النارُ مسلمًا رآني، أو رأى مَن رآني

The fire will not touch a Muslim who saw me or one who saw the one who saw me

[Graded Hasan by al-Albani in Takhreej Mishaat (no. 5958)]

However, Shakh al-Albani rahimahullah later graded it weak in Daif at-Tirmidhi (no. 3858)

However, there are other Ahaadith that indicate a similar meaning. For example:

طوبَى لِمَنْ رآني وآمنَ بِي ، وطوبَى لِمَنْ رأى مَنْ رآنِي ، ولِمَنْ رأى مَنْ رآني وآمنَ بِي

Glad tidings or a Tree in Paradise for the one who saw me and believed in me. Glad tidings or a Tree in Paradise for the one who saw the one who saw me. Glad tidings or a Tree in Paradise for the one who saw the one who saw the one who saw me

[as-Saheeha no. 1254]

And Allah knows best

Faisal Ibn Abdul Qaadir Ibn Hassan
Abu Sulaymaan