(narration) of the Prophet (peace and blessings of Allah be upon him) sahih (authentic) in which it says that “One third of those who are in the grave are there because of the evil eye”?
Evil eye kills why do u think most famous people are depressed and suicidal even though they have everything.
Weak hadith
As for "One third of those who are in the grave are there because of the evil eye", There is a narration that states:
ثلث منايا أمتي من العين
"Third of those who are destined death is from the 'ayn"
Al-Albani said it was da'eef in his 'Da'eef al-Jaami', 1054 - and there is another narration with the word 'hasad' instead of 'ayn', but it is also weak.
There is another similar narration:
نصف ما يحفر لأمتي من القبور من العين
"Half of what takes my ummah to their grave is from the 'ayn"
Al 'Araqi said it was very weak in his 'Tarh al-Tathweeb', 8/198. Sakhawi said the chain contained a liar and Al-Albani said it was fabricated.
The other narration:
أكثر من يموت من أمتي بعد كتاب الله و قضائه و قدره بالأنفس
"Many from my ummah who die is from what Allah has written, and from His will and decree and of the 'ayn"
Al-Albani said it was hasan in his 'Silsilat as-Saheehah', 747.
We should get used to reading the daily adhkar and supplications that protect oneself against the evil eye. We can't blame the 'ayn if we allow it to overtake us without taking necessary precautions. And Allah knows best.