Sec.  35.15  Justification; use of physical force in defense of a
                   person.
    1.   A  person  may, subject to the provisions of subdivision
two, use physical force upon  another  person  when  and  to  the
extent  he  reasonably  believes  such  to be necessary to defend
himself or a third person from what he reasonably believes to  be
the  use or imminent use of unlawful physical force by such other
person, unless:
    (a)   The  latter's conduct was provoked by the actor himself
with intent to cause physical injury to another person; or
    (b)  The actor was the initial aggressor; except that in such
case his use of physical force is nevertheless justifiable if  he
has  withdrawn  from  the  encounter and effectively communicated
such withdrawal to such other person but the latter  persists  in
continuing  the incident by the use or threatened imminent use of
unlawful physical force; or
    (c)   The  physical force involved is the product of a combat
by agreement not specifically authorized by law.
    2.   A  person may not use deadly physical force upon another
person under circumstances specified in subdivision one unless:
    (a)   He  reasonably believes that such other person is using
or about to use  deadly  physical  force.   Even  in  such  case,
however,  the actor may not use deadly physical force if he knows
that he can with complete safety as to himself and  others  avoid
the  necessity of so doing by retreating; except that he is under
no duty to retreat if he is:
    (i)  in his dwelling and not the initial aggressor; or
    (ii)  a police officer or peace officer or a person assisting
a police officer or a peace officer at  the  latter's  direction,
acting pursuant to section 35.30; or
    (b)   He  reasonably  believes  that  such  other  person  is
committing or attempting to commit a kidnapping,  forcible  rape,
forcible sodomy or robbery; or
    (c)   He  reasonably  believes  that  such  other  person  is
committing  or  attempting  to  commit  a   burglary,   and   the
circumstances  are  such that the use of deadly physical force is
authorized by subdivision three of section 35.20.
.

(For verification consult Official Text at Senate Gopher site.)