וְרָאִיתִי֩ אֲנִ֨י דָנִיֵּ֤אל לְבַדִּי֙ אֶת־הַמַּרְאָ֔ה וְהָאֲנָשִׁים֙ אֲשֶׁ֣ר הָי֣וּ עִמִּ֔י לֹ֥א רָא֖וּ אֶת־הַמַּרְאָ֑ה אֲבָ֗ל חֲרָדָ֤ה גְדֹלָה֙ נָפְלָ֣ה עֲלֵיהֶ֔ם וַֽיִּבְרְח֖וּ בְּהֵחָבֵֽא׃
Rashi on Daniel
but the men who were with me Our Sages of blessed memory said that they were Haggai, Zechariah, and Malachi.
Rashi on Daniel
but a great quaking fell upon them Our Sages of blessed memory said that although a person does not see something of which he is terrified, his guardian angel, who is in heaven, does see it; therefore, he becomes terrified.