ANSWER:

Of course not!

His martyrdom is enough proof over his sincerity and hence he would not be questioned in his grave. 

QUESTION: Are martyrs asked the three questions in the grave.

Torment and Blessing in the Grave | July 25, 2023 8:37 pm
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Is it true that when dies on Friday. He is saved from punishment of the grave and therefore goes to jannah
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QUESTION: There is a hadith that states that a perosn who reads ayatul kursi after every fardh salah will go to jannah instantly after death. I assume that means that the stages (questioniing in grave, barzakh and day of judgement) will not exist for this person.