In the dream you described about your brother, there are elements of both fear and peace. Here are some traditional Islamic interpretations for these components:

1. Brother (أخ – Akh): In dreams, a brother can symbolize support, companionship, or even unresolved issues. He might represent an aspect of yourself or a significant relationship.

2. Frightening and Peaceful Emotions: Simultaneous feelings of fear and peace in a dream can suggest a transition period, where one might be moving through challenges but is also being supported or guided by Allah (SWT). The contrast can indicate Allah’s protection during difficult times.

Interpretation:

This dream may be suggesting a message from Allah to strengthen your bond with your brother or to find peace in a challenging relationship or situation that involves him. The feeling of fear intertwined with peace could imply that while there may be concerns or anxieties present, divine support and tranquility are also with you.

The Prophet Muhammad (peace be upon him) taught that a dream could be a reflection of one's emotions or scenarios from wakefulness, but sometimes, they could be glad tidings from Allah (مبشرات – Mubashshirat).

Reflection:

Consider this dream as an invitation from Allah to nurture your relationship with your brother or to resolve any underlying issues. Seek Allah’s guidance through prayer (صلاة – Salah) and reflection (تفكر – Tafakkur). Remember, invoking Allah's name and seeking refuge from negative influences can also bring peace to your heart.

May Allah grant you clarity and peace.