The Prophets - 21:103 "The greatest fear will not grieve them. They will be greeted by angels saying: "This is your Day which you were promised"."
The greatest fear:
Sheva/34:51 If you could see the moment when they are seized with fear; they cannot escape; they are seized from a close place.

The Moon/54:6 Pay no attention to them on the Day when the caller will call to something unseen and unrecognized,
The Moon/54:7 They will come out of the graves with humiliation in their eyes, like scattered locusts...
The Moon/54:8 "As they run towards the caller, the disbelievers say, "This is a hard day"."

The Ways of Ascent/70:43 On that Day they will come out of their graves swiftly, as if they were being driven to the sacrificial stone...
The Ways of Ascent/70:44 With their eyes turned away and shame enveloping them. This is the Day promised to them.

The Criterion/25:65 "And they say, "Our Lord, turn away from us the punishment of Hell. Its punishment is terrible."

Prophet Abraham/14:42 Do not think that Allah is unaware of what the wrongdoers are doing. He only postpones them until the Day when their eyes will be frozen with terror.
Prophet Abraham/14:43 They run about with their heads stiffly erected on their necks, their eyelids unmoving, their minds blank with fear.

Prophet Hud/11:103 In this is a lesson for those who fear the torment of the Hereafter. It is a day when the people are gathered, it is a day of witnessing.

The Light/24:37 There are people. Neither business nor commerce prevents them from remembering Allah, observing the prayer and paying the zakat. They fear a Day when hearts and eyes will turn upside down.

The Ants/27:87 On the Day when the trumpet is blown, everyone in the heavens and the earth will be terrified except those whom Allah wills. They will all come to him bowing down.
The Ants/27:89 Whoever brings good, he will be given better than that, and they will be safe from the fear of that Day.

Luqman/31:33 O people, listen to your Lord and fear the Day when the father will not be able to help his child nor the child help the father. The Word of Allah is the truth. Let not the life of this world deceive you, nor let the deceivers deceive you with Allah.

The Man/76:7 They fulfill their promises and fear a Day that is exceedingly evil.