show me in Revelation the suffering of the Saints who were alive in the Tribulation
In Revelation 20:4, tribulation saints are described: ...those who had been beheaded because of the testimony of Jesus and because of the word of God, and those who had not worshiped the beast or his image, and had not received the mark upon their forehead and upon their hand; and they came to life and reigned with Christ for a thousand years.
These would be people who became believers during the last 3.5 years of Daniel’s 70th week. They are also part of the first resurrection, Rev. 20:5.
The rest of the dead that will be raised after the 1000-year reign of Christ are the dead, meaning the ones who are dead in their trespasses and sins (unbelievers), whose fate is described in Rev. 20:11-15.
17And the dragon was wroth with the woman, and went to make war with the remnant of her seed, which keep the commandments of God, and have the testimony of Jesus Christ. Revelation 12:17
" 7And it was given unto him to make war with the saints, and to overcome them: and power was given him over all kindreds, and tongues, and nations. " Revelation 13:7
10He that leadeth into captivity shall go into captivity: he that killeth with the sword must be killed with the sword. Here is the patience and the faith of the saints. Revelation 13:10
9And the third angel followed them, saying with a loud voice, If any man worship the beast and his image, and receive his mark in his forehead, or in his hand, 10The same shall drink of the wine of the wrath of God, which is poured out without mixture into the cup of his indignation; and he shall be tormented with fire and brimstone in the presence of the holy angels, and in the presence of the Lamb: 11And the smoke of their torment ascendeth up for ever and ever: and they have no rest day nor night, who worship the beast and his image, and whosoever receiveth the mark of his name. 12Here is the patience of the saints: here are they that keep the commandments of God, and the faith of Jesus. 13And I heard a voice from heaven saying unto me, Write, Blessed are the dead which die in the Lord from henceforth: Yea, saith the Spirit, that they may rest from their labours; and their works do follow them. Revelation 14:11-13.
Please look them up and read them yourself!