Back-whack \\, and also use qq (although, it's not required, but should make it a little easier to read): 
$goodtxt = qq(asterisk -rx "celliax_sendsms line0/$word[3] \\"Good Pas
+sword\\"");

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In reply to Re: How to include \ in a variable? by toolic
in thread How to include \ in a variable? by chuckycharms

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