I don’t have a quote or a photo to offer for the eclipse, but did find this 4-5th Century Christian hymn which references the sun:
Blessed Light of the Trinity,
Now as the fiery sun declines
Pour radiance in our hearts.
In morning songs we offered praise,
At evening we implore you.
To you, our glory,
Through every age,
May this suppliant offer praise.”
(John McGuckin, AT THE LIGHTING OF THE LAMPS: HYMNS OF THE ANCIENT CHURCH, p 39)