/usr/share/aide/config/aide/aide.conf.d/31_aide_nagios3 is in aide-common 0.16~a2.git20130520-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 | !/var/lib/nagios3/spool/checkresults/[a-zA-Z0-9]{7}(\.ok)?$
/var/lib/nagios3/spool/checkresults$ VarDir
/var/lib/nagios3/retention\.dat$ VarFile
/var/lib/nagios3$ VarDir
/var/log/nagios3/archives/nagios-[0-9]{2}-[0-9]{2}-[0-9]{4}-[0-9]{2}\.log$ LoSerMemberLog
/var/log/nagios3/archives$ VarDir
/var/log/nagios3/nagios\.log$ LowLog
/var/log/nagios3$ VarDir
/var/cache/nagios3/(status\.dat|objects\.cache)$ VarFile
/var/cache/nagios3$ VarDir
/@@{RUN}/nagios3/nagios3\.pid$ VarFile
/@@{RUN}/nagios3$ VarDirInode
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