PSI inv. 535 (TM, Image) is a papyrus fragment dated to a fairly narrow window, 450–499 AD. It might be better to extend that window to a hundred-year window, something like 425–524 AD, as I didn’t note any external information that would support a 50 year window. The papyrus was originally published by Naldini:

PSI inv. 535, image from PSIonline

The papyrus is not small; it is around 17.6cm by 12cm. And the letters are fairly legible outside of the places where the papyrus itself is damaged.

My draft translation is below.

1. ḥearing̣ .[…]
2. of judgment in the …. … […]*
3. now For in thẹṃ have become a murderer tḥị[s one …]*
4. [who] worked so that t[h]ey ḍịṣplay because the same […]*
5. against But th(e) S(av)i(o)r shouting “Away! Away! Crucify ḥ[im!” …]*
6. and since the cross going glory(?)[… king-]*
7. ḍom to change the tribes in insolence …[…]
8. [hav]ing confessed while suffering but king .[…]*
9. ḥẹ was doing [abo]ve steadying himself, he for ..[…]*
10. […]…. ** wanderi[ng] about he coverṣ[…]*
11. […]… and the indeed he urgẹḍ ẉḥọṃ […]

Lines 5–6 are the primary lines that clue us in to a context regarding Christ’s crucifixion. The translation above largely keeps the word order of the papyrus, but a less restrictive translation could be like: “But shouting against the Savior, ‘Away! Away! Crucify him!'” This has some sort of relation with the first part of John 19:15:

Then those shouted, “Away with him! Away with him! Crucify him!” Pilate said to them, “Shall I crucify your king?” The chief priests replied, “We do not have a king except Caesar!”

Line 3 perhaps points to those in the crowd being considered murderers of the crucified one, Christ.

So there you go. A late 5th century sermon that uses “Savior” immediately previous to describing the one condemed to crucifixion.