What will Allah do to Buddhists who have achieved Nirvana?

Buddhism has two meanings, as a religion and as a philosophy. Most Buddhists are followers of the religion, not the philosophy. This question is about the philosophy. Nirvana is not the Buddhist heaven (the followers of the Buddhist religion believe that depending on karma, a person will go to either a good or bad afterlife, and then be reincarnated as either an advanced being or a lowly being). Nirvana is a state of mind. According to my understanding: The view of Buddhism is that suffering is due not only to bad stimuli, but also ultimately good stimuli as they inevitably are lost eventually, and that hurts as well. So the first step towards Nirvana is to cut all connections to stimuli and emotions. So at this stage the Buddhist is constantly content no matter what is happening around him. That is why Thich Quang Duc didn’t react to burning himself alive to protest for the suffering of his people. He wasn’t resisting the pain, he completely ignored it: https://youtu.be/OxrBik16Hzg The next stage is realising that your emotions and thoughts are also stimuli, and thus working to abandon them as well, so you achieve a state of blankness and peace. The last stage where the individual reaches Nirvana is when he loses his sense of self completely, by not associating with even his personality and memories. ——— So based on this, assuming it is true, what will Allah do to Buddhists who have achieved Nirvana (also known as Buddhas) after they die, since being completely impartial to pleasure or pain, this world, heaven, and hell would all carry the same lack of value to them?