'fellow beings' is correct and can be used in written English.
It is typically used to refer to other people, as well as to imply a shared sense of humanity or commonality. For example, you might say, "We are all fellow beings and should strive to treat each other with kindness and respect."
Dr. Muhammad Babar has earned tremendous respect in the Pakistani and mainstream communities for his outstanding services to the fellow beings, be it a disaster relief or other humanitarian work, he is there to serve.
Though Woolf professed a desire for a time when masters and servants might be "fellow beings," and argued in her work for space and autonomy for women, her life was one of dependence; she did not learn to cook until she was forty-seven.
Compare Sayre's account (1969: 94): "If no statement, either affirmative or negative, can remain true for longer than the time taken in its utterance, then no statement can be treated as either true or false, and the cause of communicating with one's fellow beings must be given up as hopeless".
Mawlana suggests that ideal man overcomes his egoism and commit himself to be beneficial to his fellow beings.
For the sake of the health of our planet and fellow beings, may this year's food lessons be remembered and well-integrated as we move forward.
She was a person with a deep religious faith, and she would have considered it to be a perfectly natural human reaction to fellow beings in distress".
All I felt was that I was terribly alone and simply wanted to be in this fellow being's company.
Once again, abilities thought to be uniquely human have been challenged by our fellow-beings.
Can the level of disappointment in fellow human beings be measured?
In a 1923 essay, he said of Chaucer, "He is not horrified by the behavior of his fellow-beings, and he has no desire to reform them".
Within a quarter of an hour he would have been forced to seek useless shelter against the intolerable heat — and this we can affirm independently of any hypothesis concerning the size and shape of this observer, provided that he was constructed, like us, of molecules and atoms — and in half an hour his testimony, and that of all his fellow-beings, would end.
