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My Actual Final Song to Riley

Okay, this is my final Riley Riddle (and not my previous one), because I could not resist...
...and that meant this had to be even better.

Riddle me this:

My prefix will pray with an S,
My suffix is red with an A,
My infix, so ill with an F,
If only affixed with an E.

Note:

The answer is not "safe / SAFE". This is genuinely true; no wordplay involved.
And although the answer is safe... it can likely be the result of crime.

Hint 1:

Although the verses do not rhyme,
I tell you this is not a crime.
Well, now it rhymes, but see not that!
A word at end, you should look at.

Now changing how you say this word,
Will highlight even when absurd;
Though then you might add properly,
To find the sharing property.

Hint 2:

The three main parts I have described,
Have two such elements inscribed.
The first is in the prior hint;
The second is the fingerprint.

Now every word has much intent:
To rhyme and secretly present.
For instance, I used "prior", why?
It punished the unjustified.

Major Hint:

I used the word "affixed" for a reason. E needs to be added to each affix; e.g.,

There exists a word that contains an E and is frequently used to spray.
Because this word is the Prefix + E, take E out and continue in that way.

The answer might just come to mind if injuries are what you find.

Any edits that I make will either be hints or grammatical improvements. Also added the knowledge tag for the second hint (though very little knowledge is required).

I would also like to point out that nearly every word is used with an alternative purpose as opposed to making things rhyme. This is to say, they each have clues; e.g., fre could refer to fire.