Technically, they are not in Ukrainian (well, not in what we call Ukrainian today), but in Old Slavonic.
> Господи
Which is actually written as г҃и (but without a visible titlo in case of 142).
> всякої біди
More like "вьсѧкоѧ бѣдѣ" (but I'm not sure, that's just how it looks like to me)
But, yeah, anyway, most people who know modern Slavic languages that use Cyrillic scripts should be able to comprehend some of the writings. While the languages have evolved, lots of words (or, at least, their stems) are recognizable. Although there's always a danger of false cognates.
119: Се писал Манеш (This written by Manesh)
142: Господи поможи рабу своєму Івану Пере (Lord, help your slave Ivan Pere)
145: Господи поможи рабу своєму Константину і ізбав нас от всякої біди (Lord, help your slave Constantin and save us from everything bad).