Father Agathon of Hilandar recounted that he went to St. John of Shanghai to receive a blessing to go to Mount Athos. St. John blessed him but noticed certain fears in him, which were the result of demonic temptations. He said to him: “Do not be afraid under any circumstances! Let the devil toss you about, but you hold firmly to Christ and do not fear!” After that, the fears disappeared.
From the book "Diet or Fasting – How to Fast in the Modern World", published by Obraz Svetački - Očev Dom, Belgrade, 2021